Bio


After undergraduate and graduate study at Yale, Wessells served as an American Cancer Society Post-doctoral fellow with Clifford Grobstein at Stanford from 1960-61. Faculty positions at Stanford began in 1962 and emeritus status in 1988. Wessells taught the core premedical courses of Vertebrate Biology and Developmental Biology every year, and helped literally thousands of ugs enter the medical profession. He was awarded the third senior Walter J. Gores Award for Excellence in teaching. The Wessells lab had many graduate PhD students, post-doctoral fellows, visiting sabbatical scientists, and ug Honors students. Developmental biology of skin, lungs, pancreas, and other organs was pursued, and cell biology involving the cytoskeleton, growth factors, cell locomotion, and other phenomena were addressed. Continuous support from N.I.H. and N.S.F. was from 1962-1988, and included the first four electron microscopes in Stanford Biology. Over a hundred research papers, including one with over 1300 citations in the 1970s, and some eleven books were written or edited by Wessells. Graduate students and others published independently. Sabbatical years were supported by the American Cancer Society and Guggenheim Foundation and were spent at The University of Washington Medical School and Strangeways Research Lab at Cambridge University. Administrative work as department head, associate dean, and Dean of Humanities and Sciences was carried out without reducing course teaching and marginally reducing lab productivity. Wessells chaired many Senate, university and H&S committees, including search committees for the Provost and the H&S Dean; he chaired and wrote the guidelines for faculty consulting and moonlighting, and wrote the first guides to departments for applying principles of affirmative action in hiring, reappointing, promoting, and tenuring. Wessells helped Jasper Ridge became a Biological Preserve and worked to insure the perpetuity of Studio Art, Computer Music, and Creative Writing.

Academic Appointments


Administrative Appointments


  • Dean, School of H&S, Stanford (1981 - 1988)
  • Associate Dean, H&S, Stanford (1977 - 1981)
  • Acting Director, Hopkins Marine Station, Stanford (1973 - 1976)
  • Chairman, Biology, Stanford (1971 - 1978)
  • Vice President for Academic Affairs and Provost, University of Oregon (1988 - 1994)

Honors & Awards


  • Hermann Beermann Award, Society for Investigative Dermatology (1970)
  • WALTER j. GORES Award for Excellence in Teaching, Stanford (1973)
  • Guggenheim Fellow at Cambridge University, Clare Hall, Strangeways Laboratory, Guggenheim Foundation (1975-76)
  • Senior Scholar in Cancer Research; University of Washington Medical School, American Cancer Society (1968-69)
  • Post-doctoral Fellow At Stanford, American Cancer Society (1960-61)
  • Phi Beta Kappa Lecturer, Stanford (1981)
  • Senior Class Day Speaker, Stanford (1974)

Boards, Advisory Committees, Professional Organizations


  • Consulting referee, Biochemistry, Cell, Experimental Cell Research,Howard Hughes Medical Institute,N.S.F.,N.I.H (2018 - Present)
  • Chairman, Northwest Academic Forum (1991 - 1995)
  • Chairman, Comm. on Research and Grad Education:Natl Assoc. of State Universities and Land Grant Colleges (1991 - 1994)
  • Academic Council, Member, Oregon State System of Higher Education (1988 - 1994)
  • Chairman Committee on Life Sciences and Basic Medical Sciences, Yale University Council; Yale University (1979 - 1983)
  • President, Society for Developmental Biology (1977 - 1978)
  • Board Member, Society of Developmental Biology (1976 - 1980)
  • Member, Yale University Council (1975 - 1984)
  • Editorial Boards:, Yale Journal Biology and Medicine; Developmental Biology; Journal of Experimental Zoology;Journal of Cell Biology (1958 - 1997)

Professional Education


  • Ph.D., Yale University, Zoology (1960)
  • B.S., Yale University, Zoology (1954)

Current Research and Scholarly Interests


Annual survey of rainbow and brown trout in northern lakes on the North Island of New Zealand. !995-2018, et seq.

All Publications


  • 2000 Clifford Grobstein, A Biographical Memoir. Biographical Memoirs, Vol. 78, 2000. The National Academy Press, Washington, D.C. Wessells, N. K. National Academy Press. 2000
  • 1998 Victor Chandler Twitty, A Biographical Memoir. Biograpical Memoirs, Vol. 74, 1998, The National Academy Press, Washington. D.C. Wessells, N. K. National Academy Press. 1998 ; Biographical Memoirs (Vol. 74, 1998):
  • Essentials of Biology Wessells, N. K., Hopson, J. McGraw-Hill. 1990
  • UNFERTILIZED SEA-URCHIN EGGS CONTAIN A DISCRETE CORTICAL SHELL OF ACTIN THAT IS SUBDIVIDED INTO 2 ORGANIZATIONAL STATES CELL MOTILITY AND THE CYTOSKELETON Spudich, A., WRENN, J. T., WESSELLS, N. K. 1988; 9 (1): 85-96

    Abstract

    Changes in the distribution and organizational state of actin in the cortex of echinoderm eggs are believed to be important events following fertilization. To examine the initial distribution and form of actin in unfertilized eggs, we have adapted immunogold-labeling procedures for use with eggs of Strongylocentrotus purpuratus. Using these procedures, as well as fluorescence microscopy, we have revealed a discrete 1-micron-thick concentrated shell of actin in the unfertilized egg cortex. This actin is located in the short surface projections of unfertilized eggs and around the cortical granules in a manner that suggests it is associated with the cortical granule surface. The actin in the short surface projections appears to be organized into filaments. However, most if not all of the actin surrounding the cortical granules is organized in a form that does not bind phalloidin, even though it is accessible to actin antibody. The lack of phalloidin binding is consistent with either the presence of nonfilamentous actin associated with the cortical granules or the masking of actin-filament phalloidin-binding sites by some cellular actin-binding component. In addition to the concentrated shell of actin found in the cortex, actin was also found to be concentrated in the nuclei of unfertilized eggs.

    View details for Web of Science ID A1988M082100008

    View details for PubMedID 3356047

  • Biology Wessells, N. K., Hopson, J. 1988
  • 1988 Unfertilized sea urchin eggs contain a discrete cortical shell of actin that is subdivided into two organizational states. Cell Motility and Cytoskeleton 9:85-6 (with A. Spudich and J. T. Wrenn). 1988 Unfertilized sea urchin eggs contain a discrete cortical shell of actin that is subdivided into two organizational states. Cell Motility and Cytoskeleton 9:85-6 (with A. Spudich and J. T. Wrenn). Wessells, N. K. 1988
  • 1988 Unfertilized sea urchin eggs contain a discrete cortical shell of actin that is subdivided into two organizational states. Cell Motility and Cytoskeleton 9:85-6 (with A. Spudich and J. T. Wrenn). 1988 Unfertilized sea urchin eggs contain a discrete cortical shell of actin that is subdivided into two organizational states. Cell Motility and Cytoskeleton 9:85-6 (with A. Spudich and J. T. Wrenn). Wessells, N. K. 1988
  • EXPRESSION OF AN EPIDERMAL ANTIGEN USED TO STUDY TISSUE INDUCTION IN THE EARLY XENOPUS-LAEVIS EMBRYO SCIENCE Akers, R. M., Phillips, C. R., WESSELLS, N. K. 1986; 231 (4738): 613-616

    Abstract

    A monoclonal antibody (Epi 1) has been produced that recognizes an antigen expressed in epidermal cells of Xenopus laevis embryos. The Epi 1 antigen appears in embryonic epidermis at the end of gastrulation and is not expressed in nonepidermal structures derived from ectoderm (for example, neural tube or cement gland). The capacity to express the Epi 1 antigen is restricted to cells of the animal hemisphere prior to the midblastula stage of development (stage 8), and tissue interactions during gastrulation inhibit the expression of the Epi 1 antigen in neural ectoderm. This epidermal antigen will be a valuable marker for studies of ectodermal commitment.

    View details for Web of Science ID A1986AYM2700043

    View details for PubMedID 3945801

  • 1986 1986 Expression of an epidermal antigen used to study tissue induction in the early Xenopus Iaevis embryo. Science 231.613-16 (with R. M. Akers and C.R. Phillips). 1986 1986 Expression of an epidermal antigen used to study tissue induction in the early Xenopus Iaevis embryo. Science 231.613-16 (with R. M. Akers and C.R. Phillips). Wessells, N. K. 1986
  • MORPHOGENETIC REARRANGEMENT OF INJECTED COLLAGEN IN DEVELOPING CHICKEN LIMB BUDS PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA STOPAK, D., WESSELLS, N. K., Harris, A. K. 1985; 82 (9): 2804-2808

    Abstract

    A fundamental question concerning the development of the extracellular matrix is what factors control the arrangement of collagen fibrils within a tissue and at the same time allow for the great diversity of geometric forms exhibited by collagen. In this report, we test the possibility that physical forces within the embryo serve to organize collagen fibers into regular patterns. In particular, we test the prediction that patterns of stress having this morphogenetic function are generated by cell traction, the contractile force exerted by cells to propel themselves. To study the effects of these mechanical forces on the extracellular matrix, type I collagen was fluorescently labeled and injected into developing chicken wing buds. When the injected limbs were allowed to develop and then examined histologically, the exogenous collagen was found incorporated within normal connective tissues of the wing. The labeled collagen became arranged according to its site of injection, forming parts of tendons, perichondria, cartilages, perineuria, and blood vessels. Since the injected collagen formed a gel within minutes of its injection, the subsequent incorporation of this performed collagen within organized structures cannot be explained in terms of molecular self-assembly or other mechanisms occurring during collagen deposition. These results demonstrate that, within developing tissues, patterns of forces exist that are capable of physically rearranging collagen and determining its long-range order.

    View details for Web of Science ID A1985AGW3200053

    View details for PubMedID 3857616

  • 1985 Morphogenetic rearrangement of injected collagen in developing chicken limb buds. Proceedings of the National Academy of Sciences USA 82:2804-2808 (with D. V. Stopak and A. K. Harris). 1985 Morphogenetic rearrangement of injected collagen in developing chicken limb buds. Proceedings of the National Academy of Sciences USA 82:2804-2808 (with D. V. Stopak and A. K. Harris). Wessells, N. K. 1985
  • THE EARLY DEVELOPMENT OF MYSTACIAL VIBRISSAE IN THE MOUSE JOURNAL OF EMBRYOLOGY AND EXPERIMENTAL MORPHOLOGY WRENN, J. T., WESSELLS, N. K. 1984; 83 (OCT): 137-156

    Abstract

    The initial generation of the pattern of mystacial vibrissae (whiskers) in the mouse is described. The maxillary process is present in 10-day embryos but has a relatively flat surface. Beginning at approximately 11.5 days, the first sign of vibrissal development is the formation of ridges and grooves on the maxillary and lateral nasal processes. The first vibrissal rudiment to form subsequently appears posterior to the most ventral groove on the maxillary process. It is the most ventral whisker of the posterior, vertical row. The next few rudiments appear: dorsal to the first, also in the vertical row; and anterior to the first, on the ventral-most ridge and in the groove beneath it. Formation of vibrissal rudiments continues in a dorsal and anterior progression usually by an apparent partitioning of the ridges into vibrissal units. The hypothesis that this patterning of mystacial vibrissae might be determined by the pattern of innervation in the early mouse snout was investigated. Nerve trunks and branches are present in the maxillary process well before any sign of vibrissal formation. Because innervation is so widespread there appears to be no immediate temporal correlation between the outgrowth of a nerve branch to a site and the generation of a vibrissa there. Furthermore, at the time just prior to the formation of the first follicle rudiment, there is little or no nerve branching to the presumptive site of that first follicle while branches are found more dorsally where vibrissae will not form until later. Thus, a one-to-one spatial correlation between nerve and follicle sites also appears to be lacking. The developmental changes in ultrastructure within the neurites of the trunks and branches as well as the apparent rearrangements of the nerve trunks suggest that early innervation of the snout is a labile phenomenon and that the vibrissal pattern begins to be established before the neural pattern is completely developed. The results indicate that vibrissal pattern formation is likely to be a complex process relying on the interplay of the cells and tissues involved, rather than on unidirectional instructions from neurons to other cell types.

    View details for Web of Science ID A1984TS16500010

    View details for PubMedID 6502072

  • 1984 Differential antigen adhesivity used to select spleen cells for the production of monoclonal antibodies to embryonic neurons. Journal of Immunol. Methods‘ 73:1-15. 1984 Differential antigen adhesivity used to select spleen cells for the production of monoclonal antibodies to embryonic neurons. Journal of Immunol. Methods‘ 73:1-15. Wessells, N. K. 1984
  • DIFFERENTIAL ANTIGEN ADHESIVITY USED TO SELECT SPLEEN-CELLS FOR THE PRODUCTION OF MONOCLONAL-ANTIBODIES TO EMBRYONIC NEURONS JOURNAL OF IMMUNOLOGICAL METHODS Barald, K. F., WESSELLS, N. K. 1984; 73 (1): 1-15

    Abstract

    Monoclonal antibodies specific for cell surface antigens on embryonic chick ciliary ganglion neurons (CG) have been obtained at high frequencies by fractionating spleen cells from immunized mice according to their adhesiveness for cell surfaces of the cultured neurons. Spleen cells from mice that had been immunized with live or lightly fixed (0.125% glutaraldehyde) CG neurons were selected for subsequent hybridization with myeloma cells after fractionation on lawns of CG neurons in tissue culture. Immunized spleen cells were cultured with the neurons for 4-7 days prior to fractionation. Three groups of spleen cells were selected for fusion with a myeloma cell line: a non-adherent population of spleen cells, a population of spleen cells that could be removed from the neuronal cells by shaking on a vibratory shaker for 1 h, and a population that could be removed from the neuronal cells only by treatment with low concentrations of trypsin. Of the 3 groups of spleen cells, the population that required trypsin treatment produced the greatest number of hybridomas specific for neurons and for neuronal cell surfaces. Fewer neuron-specific hybridomas resulted from fusion of the group of spleen cells that could be removed from the antigen lawn by shaking. None of these was specific for the CG neurons. No neuron-specific hybridomas resulted from the fusion of the cells that did not adhere to the neuronal cells, and at most only 1 neuron-specific hybridoma resulted from fusions of comparable groups of unselected spleen cells (spleen cells from immunized animals which were not selected on antigen lawns).

    View details for Web of Science ID A1984TM99300001

    View details for PubMedID 6491293

  • THE ROLE OF CELL-PROLIFERATION AND CELLULAR-SHAPE CHANGE IN BRANCHING MORPHOGENESIS OF THE EMBRYONIC MOUSE LUNG - ANALYSIS USING APHIDICOLIN AND CYTOCHALASINS JOURNAL OF EXPERIMENTAL ZOOLOGY GOLDIN, G. V., HINDMAN, H. M., WESSELLS, N. K. 1984; 232 (2): 287-296

    Abstract

    The formation of induced supernumerary buds in the embryonic mouse tracheal epithelium has been used as a model system to analyse the respective roles of cell proliferation and microfilament-mediated cell shape change during branching morphogenesis. In order to analyse the mitotic events associated with the formation of epithelial buds, the induction of supernumerary tracheal buds by mesenchymal grafts was carried out with the inhibitor of DNA synthesis, aphidicolin, present in the culture medium for varying intervals of time during the 16-hour inductive process. The presence of aphidicolin for 10 to 16 hours of the inductive period blocks the formation of induced tracheal buds, whereas the presence of the inhibitor for half of that time (either the first 8 hours or the last 8 hours) does not prevent this morphogenetic event from taking place, although smaller buds resulted from induction under these conditions. Both the inhibition of DNA synthesis and the recovery from 10 microM aphidicolin treatment, as measured by 3H-thymidine incorporation, were found to occur rapidly. The addition of 2 microM dihydrocytochalasin B (or cytochalasin B) together with aphidicolin during the second half of the inductive period inhibits the formation of supernumerary buds and upon removal of the cytochalasin rapid formation of buds takes place. We conclude that the formation of epithelial buds during branching morphogenesis occurs as a result of enhanced localized cell proliferation coupled with epithelial cell shape change (or preservation of cell morphology) mediated by microfilaments, which have been observed in both the apical and basal cytoplasm of the epithelial cells in the region where branching of the trachea is taking place.

    View details for Web of Science ID A1984TS27100013

    View details for PubMedID 6438270

  • NEURONAL MOTILITY - THE ULTRASTRUCTURE OF VEILS AND MICROSPIKES CORRELATES WITH THEIR MOTILE ACTIVITIES JOURNAL OF CELL SCIENCE Tosney, K. W., WESSELLS, N. K. 1983; 61 (MAY): 389-411

    Abstract

    We have documented the ultrastructural characteristics that correlate with protrusion, adhesion and retraction of neuronal veils and microspikes, by filming individual neurons of the chick ciliary ganglion and examining the same cells with high-voltage electron microscopy. We find that new veils invariably contain only a cortical meshwork of filaments and are devoid of microtubules, groups of vesicles and other organelles. At sites of recent veil retraction a cortical meshwork on the substratum side underlies a filament-free space containing vesicle clusters and a complexly folded upper membrane. Areas without veil activity are smooth-surfaced and contain a three-dimensional lattice of filaments. We discuss the implications of these observations for the mechanisms of surface recruitment and retrieval during motile activity. We also find that the ultrastructure of moving and attached extensions of the cell surface differs dramatically. Unattached microspikes and actively extending veils have an open, criss-cross array of filaments, whereas attached microspikes contain more aligned filaments, which extend as a small bundle into the growth cone. These results suggest that cell surface protrusion is mediated by meshworks of loosely packed filaments. More compact bundles of filaments are probably generated only at adhesion points.

    View details for Web of Science ID A1983QQ88200024

    View details for PubMedID 6885943

  • 1982 A catalogue of processes responsible for metazoan morphogenesis. In: Evolution and Development, ed. J .T. Bonner, pp. 115-54. Dahlem Konferenzen 1982. Berlin. Heidelberg, New York: Springer-Verlag. 1982 A catalogue of processes responsible for metazoan morphogenesis. In: Evolution and Development, ed. J .T. Bonner, pp. 115-54. Dahlem Konferenzen 1982. Berlin. Heidelberg, New York: Springer-Verlag. Wessells, N. K. 1982
  • 1982 Isolation of epidermal growth factor from chicken embryos. Journal of Cell Biology 99:4l3a (with L. A. Opperman, S. Yidson, and G. V. Goldin). 1982 Isolation of epidermal growth factor from chicken embryos. Journal of Cell Biology 99:4l3a (with L. A. Opperman, S. Yidson, and G. V. Goldin). Wessells, N. K. 1982
  • 1982 The early development of mystacial vibrissae in the mouse. Journal of Embryology. Exp. Morph. 83: 137-156 (with J. T. Wrenn). 1982 The early development of mystacial vibrissae in the mouse. Journal of Embryology. Exp. Morph. 83: 137-156 (with J. T. Wrenn). Wessells, N. K. 1982
  • 1982 A monoclonal antibody reveals early differences between neural and non-neural ectoderm in Xenopus Iaevis embryos. Neuroscience Abstracts 10:788 (with R. M. Akers and C. K Phillips). 1982 A monoclonal antibody reveals early differences between neural and non-neural ectoderm in Xenopus Iaevis embryos. Neuroscience Abstracts 10:788 (with R. M. Akers and C. K Phillips). Wessells, N. K. 1982
  • 1982 Influence of plasma membrane fractions of various tissues on sensory neurite growth in vitro. Neuroscience Abstracts l0:38,G (with D. Sinicropi). 1982 Influence of plasma membrane fractions of various tissues on sensory neurite growth in vitro. Neuroscience Abstracts l0:38,G (with D. Sinicropi). Wessells, N. K. 1982
  • 1982 The role of cell proliferation and cellular shape change in branching morphogenesis of the embryonic mouse lung: analysis using aphidicolin and cytochalasins. Journal of Experimental Zoology 232:287-96 (with G. V. Goldin and H. M. Rudman). 1982 The role of cell proliferation and cellular shape change in branching morphogenesis of the embryonic mouse lung: analysis using aphidicolin and cytochalasins. Journal of Experimental Zoology 232:287-96 (with G. V. Goldin and H. M. Rudman). Wessells, N. K. 1982
  • 1982 Monoclonal antibodies to embryonic neurons. In: Neuronal Development, ed. N. C. Spitzer. Plenum Press, New York, pp. 101-19 (with K. Barald). 1982 Monoclonal antibodies to embryonic neurons. In: Neuronal Development, ed. N. C. Spitzer. Plenum Press, New York, pp. 101-19 (with K. Barald). Wessells, N. K. 1982
  • 1982 The segregation and early migration of cranial neural crest cells in the avian embryo. Developmental Biology 89: 13-24 (with K. W. Tosney), 1982 The segregation and early migration of cranial neural crest cells in the avian embryo. Developmental Biology 89: 13-24 (with K. W. Tosney), Wessells, N. K. 1982
  • 1982 Axon elongation- a special case of cell locomotion. In: Cell Behavior, eds. R Beilairs, A. Curtis and G. Dunn, pp. 225-46, Cambridge University Press. 1982 Axon elongation- a special case of cell locomotion. In: Cell Behavior, eds. R Beilairs, A. Curtis and G. Dunn, pp. 225-46, Cambridge University Press. Wessells, N. K. 1982
  • 1981 Of Sweet Potatoes, Blood Vessels, and Truth. Phi Beta Kappa lecture, Stanford University, June 1981. 1981 Of Sweet Potatoes, Blood Vessels, and Truth. Phi Beta Kappa lecture, Stanford University, June 1981. Wessells, N. K. 1981
  • ACTIN AND CORTICAL FIBER RETICULATION IN THE SIPHONACEOUS ALGA VAUCHERIA-SESSILIS PLANTA Blatt, M. R., WESSELLS, N. K., Briggs, W. R. 1980; 147 (4): 363-375
  • Vertebrates: Adaptations Wessells, N. K. W. H. Freeman. 1980
  • Vertebrates: Physiology Wessells, N. K. W. H. Freeman. 1980
  • 1980 Reciprocal absence of contact paralysis when motile growth cones and giial cells meet. Journal of Neurocytology 9 (with M. A. Luduena-Anderson and J. M. Geiduscheck). 1980 Reciprocal absence of contact paralysis when motile growth cones and giial cells meet. Journal of Neurocytology 9 (with M. A. Luduena-Anderson and J. M. Geiduscheck). Wessells, N. K. 1980
  • 1980 Regulation of the elongating nerve fiber. In: Current Topics in Developmental Biology, Vol. 16, 165-206 (with R. N. Johnston). 1980 Regulation of the elongating nerve fiber. In: Current Topics in Developmental Biology, Vol. 16, 165-206 (with R. N. Johnston). Wessells, N. K. 1980
  • 1980 Actin and cortical fiber reticulation in the siphonaceous alga Vaucheris sessilis. Planta 147:363-75 (with M. R. Blatt and w. R. Briggs). 1980 Actin and cortical fiber reticulation in the siphonaceous alga Vaucheris sessilis. Planta 147:363-75 (with M. R. Blatt and w. R. Briggs). Wessells, N. K. 1980; K (Wessells)
  • 1980 Responses to cell contacts between growth cones, neurites and ganglionic non-neuronal cells. Journal of Neurology 9: 647-664 (P. Letourneau, R. Nuttall, M. Anderson, and J. Geiduschek). 1980 Responses to cell contacts between growth cones, neurites and ganglionic non-neuronal cells. Journal of Neurology 9: 647-664 (P. Letourneau, R. Nuttall, M. Anderson, and J. Geiduschek). Wessells, N. K. 1980
  • RESPONSES TO CELL CONTACTS BETWEEN GROWTH CONES, NEURITES AND GANGLIONIC NON-NEURONAL CELLS JOURNAL OF NEUROCYTOLOGY WESSELLS, N. K., LETOURNEAU, P. C., NUTTALL, R. P., LUDUENAANDERSON, M., Geiduschek, J. M. 1980; 9 (5): 647-664

    Abstract

    The motility of growth cones of embryonic peripheral neurons is not inhibited by contact with the surfaces of neurites or of non-neuronal cells. Rather, growth cones and microspikes adhere to other cell surfaces and often respond with forward movement and elongation in contact with other cells, as they do on adhesive surfaces in vitro. Furthermore, non-neuronal cells do not display contact inhibition when they contact growth cones or neurites. If anything, surface motility and ruffling is stimulated by contact with a neuronal cell surface and some non-neuronal cells prefer to migrate along neurites rather than on the surface of the culture dish. These observations on the contact behaviour of cells from peripheral nerve ganglia imply that the surfaces of embryonic neurons differ from those of non-neuronal cells in that the neuronal surfaces do no elicit the typical contact inhibition response.

    View details for Web of Science ID A1980KN60800006

    View details for PubMedID 7441306

  • The Cell Surface Wessells, N. K. Academic Press. 1980
  • VEILS, MOUNDS, AND VESICLE AGGREGATES IN NEURONS ELONGATING INVITRO EXPERIMENTAL CELL RESEARCH NUTTALL, R. P., WESSELLS, N. K. 1979; 119 (1): 163-174

    View details for Web of Science ID A1979GM63300017

    View details for PubMedID 104875

  • 1979 Mammalian lung development: the possible role of cell proliferation in the formation of supernumerary tracheal buds and in branching morphogenesis. Journal of Experimental Zoology 208:337-46 (with G. V. Goldin). 1979 Mammalian lung development: the possible role of cell proliferation in the formation of supernumerary tracheal buds and in branching morphogenesis. Journal of Experimental Zoology 208:337-46 (with G. V. Goldin). Wessells, N. K. 1979
  • 1979 Veils, mounds and vesicle aggregates in neurons elongating in vitro. Experimental Cell Research 119: 163-74 (with R P. Nuttall). 1979 Veils, mounds and vesicle aggregates in neurons elongating in vitro. Experimental Cell Research 119: 163-74 (with R P. Nuttall). Wessells, N. K. 1979
  • MAMMALIAN LUNG DEVELOPMENT - POSSIBLE ROLE OF CELL-PROLIFERATION IN THE FORMATION OF SUPERNUMERARY TRACHEAL BUDS AND IN BRANCHING MORPHOGENESIS JOURNAL OF EXPERIMENTAL ZOOLOGY GOLDIN, G. V., WESSELLS, N. K. 1979; 208 (3): 337-346

    View details for Web of Science ID A1979HA12400009

    View details for PubMedID 490122

  • 1978 Actin in embryonic organ epithelia. Experimental Cell Research 114:381-7 (with B. S. Spooner and J . F. Ash). ' 1978 Actin in embryonic organ epithelia. Experimental Cell Research 114:381-7 (with B. S. Spooner and J . F. Ash). ' Wessells, N. K. 1978
  • 1978 Axon initiation and growth cone regeneration in cultured motorneurons. Experimental Cell Research 1171335-45 (with S.R. Johnson and R. Nuttall). 1978 Axon initiation and growth cone regeneration in cultured motorneurons. Experimental Cell Research 1171335-45 (with S.R. Johnson and R. Nuttall). Wessells, N. K. 1978
  • 1978 Normal branching, induced branching, and steering of cultured parasympathetic motor neurons in vitro. Experimental Cell Research 115:111-22 (with R. Nuttall). 1978 Normal branching, induced branching, and steering of cultured parasympathetic motor neurons in vitro. Experimental Cell Research 115:111-22 (with R. Nuttall). Wessells, N. K. 1978
  • NON-EQUIVALENCE OF CONDITIONED MEDIUM AND NERVE GROWTH-FACTOR FOR SYMPATHETIC, PARASYMPATHETIC, AND SENSORY NEURONS EXPERIMENTAL CELL RESEARCH Helfand, S. L., Riopelle, R. J., WESSELLS, N. K. 1978; 113 (1): 39-45

    View details for Web of Science ID A1978EW90800005

    View details for PubMedID 25192

  • AXON INITIATION AND GROWTH CONE REGENERATION IN CULTURED MOTOR NEURONS EXPERIMENTAL CELL RESEARCH WESSELLS, N. K., Johnson, S. R., NUTTALL, R. P. 1978; 117 (2): 335-345

    View details for Web of Science ID A1978GC18100012

    View details for PubMedID 569064

  • ACTIN IN EMBRYONIC ORGAN EPITHELIA EXPERIMENTAL CELL RESEARCH SPOONER, B. S., Ash, J. F., WESSELLS, N. K. 1978; 114 (2): 381-387

    View details for Web of Science ID A1978FM09700018

    View details for PubMedID 567125

  • NORMAL BRANCHING, INDUCED BRANCHING, AND STEERING OF CULTURED PARASYMPATHETIC MOTOR NEURONS EXPERIMENTAL CELL RESEARCH WESSELLS, N. K., NUTTALL, R. P. 1978; 115 (1): 111-122

    View details for Web of Science ID A1978FN67200014

    View details for PubMedID 680003

  • Tissue Interactions and Development Wessells, N. K. 1977
  • DIFFERENTIAL LABELING OF CELL-SURFACE OF SINGLE CILIARY GANGLION NEURONS INVITRO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA WESSELLS, N. K., NUTTALL, R. P., WRENN, J. T., JOHNSON, S. 1976; 73 (11): 4100-4104

    Abstract

    Cationic ferritin binds in a time and concentration dependent manner to all surfaces of ciliary ganglion neurons in culture except "mounds" and "veils". In chase experiments, bound ferritin clears from the cells surfaces and forms larger and larger patches, even at low temperatures. Binding of cationic ferritin is inhibited by poly-L-lysine, potentiated by poly-L-glutamate, and not affected by neruaminidase (acylneuraminyl hydrolase, EC 3.2.1.18), hyaluronidase (hyaluronoglucosidase, hyaluronate 4-glycanhydrolase, EC 3.2.1.35), or chondroitin ABC lyase (EC 4.2.2.4).

    View details for Web of Science ID A1976CN11500067

    View details for PubMedID 1069297

  • 1978 Nonequivalence of conditioned medium and nerve growth factor for sympathetic, parasympathetic, and sensory neurons. Experimental Cell Research 1l3:39-45 (with S. Helfand and R. Riopelle). 1978 Nonequivalence of conditioned medium and nerve growth factor for sympathetic, parasympathetic, and sensory neurons. Experimental Cell Research 1l3:39-45 (with S. Helfand and R. Riopelle). Wessells, N. K. 1976
  • 1976 Polarity of actin filaments in Characean algae. Proceedings of the National Academy of Sciences 73: 165-167. (with Y.Kersey, P.Hepler, B. Palevitz). 1976 Polarity of actin filaments in Characean algae. Proceedings of the National Academy of Sciences 73: 165-167. (with Y.Kersey, P.Hepler, B. Palevitz). Wessells, N. K. 1976
  • 1976 Localization of actin filaments in internodal cells of Characean algae. Journal of Cell Biology 68:264-275. (with Y. Kersey) 1976 Localization of actin filaments in internodal cells of Characean algae. Journal of Cell Biology 68:264-275. (with Y. Kersey) Wessells, N. K. 1976
  • 1976 Survival and development in culture of dissociated parasympathetic neurons from ciliary ganglia. Developmental Biology 50:541-7 (with S. L. Helfand and G. A Smith). 1976 Survival and development in culture of dissociated parasympathetic neurons from ciliary ganglia. Developmental Biology 50:541-7 (with S. L. Helfand and G. A Smith). Wessells, N. K. 1976
  • LOCALIZATION OF ACTIN-FILAMENTS IN INTERNODAL CELLS OF CHARACEAN ALGAE - SCANNING AND TRANSMISSION ELECTRON-MICROSCOPE STUDY JOURNAL OF CELL BIOLOGY KERSEY, Y. M., WESSELLS, N. K. 1976; 68 (2): 264-275

    Abstract

    New methods of visualizing subcortical actin filament bundles, or fibrils, in Characean internodes confirm that they are associated with chloroplasts at the surface facing the streaming endoplasm, and reveal that they are continuous over long distances. With the scanning electron microscope, an average of four to six fibrils are seen bridging a file of chloroplasts. The same configuration appears in negatively stained preparations of large blocks of chloroplast files connected by actin fibrils. Few branches of the subcortical fibrils are evident. These findings are discussed with respect to the mechanism of cytoplasmic streaming in Characeae.

    View details for Web of Science ID A1976BD48800007

    View details for PubMedID 1245548

  • POLARITY OF ACTIN-FILAMENTS IN CHARACEAN ALGAE PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA KERSEY, Y. M., Hepler, P. K., Palevitz, B. A., WESSELLS, N. K. 1976; 73 (1): 165-167

    Abstract

    Heavy meromyosin from rabbit muscle combines with oriented Nitella and Chara actin in vitro to form arrowhead structures directed opposite to the cytoplasmic flow in the living plant cell. All filaments and all bundles of filaments in the apically directed stream are similarly oriented; polarity with respect to the axis of the thallus is reversed in the downward stream. The actin filaments are attached to the chloroplasts at the ectoplasm-endoplasm interface, where the motive force for streaming is known to be generated.

    View details for Web of Science ID A1976BD04500036

    View details for PubMedID 1061112

  • 1976 Differential labeling of the cell surface of single ciliary ganglion neurons in vitro. Proceedings of the National Academy of Sciences USA 73 :4100-104 (with R. P. Nuttall, J. T. Wrenn and S. Johnson). 1976 Differential labeling of the cell surface of single ciliary ganglion neurons in vitro. Proceedings of the National Academy of Sciences USA 73 :4100-104 (with R. P. Nuttall, J. T. Wrenn and S. Johnson). Wessells, N. K. 1976
  • CONTROL OF DIRECTION OF GROWTH DURING ELONGATION OF NEURITES EXPERIMENTAL NEUROLOGY Sidman, R. L., WESSELLS, N. K. 1975; 48 (3): 237-251

    View details for Web of Science ID A1975AU27300010

    View details for PubMedID 810362

  • 1975 Control of direction of growth during the elongation of neurites. Experimental Neurology 48:23 7-51 (with R. L. Sidman). 1975 Control of direction of growth during the elongation of neurites. Experimental Neurology 48:23 7-51 (with R. L. Sidman). Wessells, N. K. 1975
  • Vertebrates: A Laboratory Text Wessells, N. K. 1975
  • MEMBRANE-FUSION IN GROWTH CONE-MICROSPIKE REGION OF EMBRYONIC NERVE-CELLS UNDERGOING AXON ELONGATION IN CELL-CULTURE TISSUE & CELL SPOONER, B. S., LUDUENA, M. A., WESSELLS, N. K. 1974; 6 (3): 399-409

    View details for Web of Science ID A1974U493300004

    View details for PubMedID 4372747

  • 1974 Does RNA pass from mesenchyme to epithelium during an embryonic tissue interaction? Proceedings of the National Academy of Sciences USA 7114747-51 (with R. M Grainger) 1974 Does RNA pass from mesenchyme to epithelium during an embryonic tissue interaction? Proceedings of the National Academy of Sciences USA 7114747-51 (with R. M Grainger) Wessells, N. K. 1974
  • 1974 Thorotrast uptake and transit in embryonic glia, heart fibroblasts and neurons in vitro. Tissue and Cell 6:757-776 (with M. A. Luduena, P. C. Letourneau, J. T. Wrenn, and B. S. Spooner). 1974 Thorotrast uptake and transit in embryonic glia, heart fibroblasts and neurons in vitro. Tissue and Cell 6:757-776 (with M. A. Luduena, P. C. Letourneau, J. T. Wrenn, and B. S. Spooner). Wessells, N. K. 1974
  • 1974 Membrane fusion in the growth cone-microspike region of embryonic nerve cells undergoing axon elongation in cell culture. Tissue and Cell 6:399-409 (with B. S. Spooner and M. A. Luduena). 1974 Membrane fusion in the growth cone-microspike region of embryonic nerve cells undergoing axon elongation in cell culture. Tissue and Cell 6:399-409 (with B. S. Spooner and M. A. Luduena). Wessells, N. K. 1974
  • 1974 Migratory cell locomotion versus nerve axon elongation: differences based on the effects of lanthanum ion. Journal of Cell Biology 61:56-69 (with P. C. Letourneau). 1974 Migratory cell locomotion versus nerve axon elongation: differences based on the effects of lanthanum ion. Journal of Cell Biology 61:56-69 (with P. C. Letourneau). Wessells, N. K. 1974
  • Veertebrate Structures and Functions Wessells, N. K. W.H.Freeman. 1974
  • MIGRATORY CELL LOCOMOTION VERSUS NERVE AXON ELONGATION - DIFFERENCES BASED ON EFFECTS OF LANTHANUM ION JOURNAL OF CELL BIOLOGY LETOURNE, P. C., WESSELLS, N. K. 1974; 61 (1): 56-69
  • THOROTRAST UPTAKE AND TRANSIT IN EMBRYONIC GLIA, HEART FIBROBLASTS AND NEURONS INVITRO TISSUE & CELL WESSELLS, N. K., LUDUENA, M. A., LETOURNEAU, P. C., WRENN, J. T., SPOONER, B. S. 1974; 6 (4): 757-776

    View details for Web of Science ID A1974V529700014

    View details for PubMedID 4477415

  • DOES RNA PASS FROM MESENCHYME TO EPITHELIUM DURING AN EMBRYONIC TISSUE INTERACTION PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Grainger, R. M., WESSELLS, N. K. 1974; 71 (12): 4747-4751

    Abstract

    Chick and mouse embryonic lung mesenchyme were incubated in vitro with an equimolar mixture of (12)C- and (15)N-labeled adenosine, guanosine, cytidine, and uridine, and trace amounts of the four tritiated ribonucleosides. This permits an unambiguous method for detecting transfer of macromolecular RNA from such a pre-incubated mesenchyme to responding lung epithelium across a Millipore filter, and for purifying any RNA transferred for further characterization. During the important period of mesenchymal support of epithelial morphogenesis, no detectable transfer of RNA was found. The level of sensitivity of these experiments was such that less than 0.01% of the labeled RNA in the mesenchyme could have been detected in the epithelium, corresponding to less than 75 labeled RNA molecules transferred to each epithelial cell. No detectable transfer of DNA from mesenchyme to epithelium was found during the inductive period, using the same approach, although with much lower sensitivity.

    View details for Web of Science ID A1974V197000023

    View details for PubMedID 4531014

  • HEAVY MEROMYOSIN BINDING TO MICROFILAMENTS INVOLVED IN CELL AND MORPHOGENETIC MOVEMENTS TISSUE & CELL SPOONER, B. S., Ash, J. F., WRENN, J. T., FRATER, R. B., WESSELLS, N. K. 1973; 5 (1): 37-46

    View details for Web of Science ID A1973P149100003

    View details for PubMedID 4571550

  • 1973 Elongation of axons in an agar matrix that does not support cell locomotion. Experimental Cell Research 811482-7 (with R. J. Strassman and P. C. Letourneau). 1973 Elongation of axons in an agar matrix that does not support cell locomotion. Experimental Cell Research 811482-7 (with R. J. Strassman and P. C. Letourneau). Wessells, N. K. 1973
  • 1973 Orientational preferences shown by microspikes of growing nerve cells in vitro. Tissue and Cell 5:401-12 (with R. J. Strassman). 1973 Orientational preferences shown by microspikes of growing nerve cells in vitro. Tissue and Cell 5:401-12 (with R. J. Strassman). Wessells, N. K. 1973
  • 1973 Tissue Interactions in Development. An Addison-Wesley Module in Biology, No. 9, 9-l to 9-43 1973 Tissue Interactions in Development. An Addison-Wesley Module in Biology, No. 9, 9-l to 9-43 Wessells, N. K. 1973
  • 1973 Cell locomotion, nerve elongation and microfilaments. Developmental Biology 30-427-40 (with M. A.Luduena). 1973 Cell locomotion, nerve elongation and microfilaments. Developmental Biology 30-427-40 (with M. A.Luduena). Wessells, N. K. 1973
  • 1973 Heavy meromysin binding to microfilaments involved in cell and morphogenetic movements, Tissue and Cell 5:37-46 (with B. S. Spooner, J. F. Ash, J, T. Wrenn and R B. Frater). 1973 Heavy meromysin binding to microfilaments involved in cell and morphogenetic movements, Tissue and Cell 5:37-46 (with B. S. Spooner, J. F. Ash, J, T. Wrenn and R B. Frater). Wessells, N. K. 1973
  • 1973 Surface movements, microfilaments and cell locomotion Locomotion of Tissue Cells, Ciba Foundation Symposium 14:53-82 (with B. S. Spooner and M. A. Luduena). 1973 Surface movements, microfilaments and cell locomotion Locomotion of Tissue Cells, Ciba Foundation Symposium 14:53-82 (with B. S. Spooner and M. A. Luduena). Wessells, N. K. 1973
  • 1973 Effects of papaverine and calcium-free medium on salivary gland morphogenesis. Developmental Biology 33 :463-9 (with J. F. Ash and B. S. Spooner). 1973 Effects of papaverine and calcium-free medium on salivary gland morphogenesis. Developmental Biology 33 :463-9 (with J. F. Ash and B. S. Spooner). Wessells, N. K. 1973
  • 1973 Cytochalasin B: Alterations in salivary gland morphogenesis not due to glucose depletion. Developmental Biology 3 I :4 121-5 (with E. L. Taylor). 1973 Cytochalasin B: Alterations in salivary gland morphogenesis not due to glucose depletion. Developmental Biology 3 I :4 121-5 (with E. L. Taylor). Wessells, N. K. 1973
  • 1973 Cytochalasin B: Effects on membrane rufiling, growth cone and microspike activity, and microfilament structure not due to altered glucose transport. Developmental Biology 31:413-20 (with K. M. Yamada). 1973 Cytochalasin B: Effects on membrane rufiling, growth cone and microspike activity, and microfilament structure not due to altered glucose transport. Developmental Biology 31:413-20 (with K. M. Yamada). Wessells, N. K. 1973
  • ORIENTATIONAL PREFERENCES SHOWN BY MICROSPIKES OF GROWING NERVE-CELLS IN-VITRO TISSUE & CELL STRASSMA, R. J., WESSELLS, N. K. 1973; 5 (3): 401-412

    View details for Web of Science ID A1973Q974300007

    View details for PubMedID 4744679

  • CELL LOCOMOTION, NERVE ELONGATION, AND MICROFILAMENTS DEVELOPMENTAL BIOLOGY LUDUENA, M. A., WESSELLS, N. K. 1973; 30 (2): 427-440

    View details for Web of Science ID A1973P250200015

    View details for PubMedID 4703680

  • 1972 An analysis of salivary gland morphogenesis: Role of cytoplasmic microfilaments and microtubules. Developmental Biology 27:38-54 (with B. S. Spooner). 1972 An analysis of salivary gland morphogenesis: Role of cytoplasmic microfilaments and microtubules. Developmental Biology 27:38-54 (with B. S. Spooner). Wessells, N. K. 1972
  • 1971 Microfilaments and cell locomotion. Journal of Cell Biology 49:593-613 (with B. S. Spooner and K. M. Yamada). 1971 Microfilaments and cell locomotion. Journal of Cell Biology 49:593-613 (with B. S. Spooner and K. M. Yamada). Wessells, N. K. 1971
  • 1971 Microfilaments in cellular and developmental processes. Science 171:135-43 (with B. S. Spooner, J.F. Ash, M. O. Bradley, M. A. Luduena, E. L. Taylor, J. T. Wrenn and K. M. Yamada). 1971 Microfilaments in cellular and developmental processes. Science 171:135-43 (with B. S. Spooner, J.F. Ash, M. O. Bradley, M. A. Luduena, E. L. Taylor, J. T. Wrenn and K. M. Yamada). Wessells, N. K. 1971
  • 1971 How living cells change shape. Scientific American 225-.77. 1971 How living cells change shape. Scientific American 225-.77. Wessells, N. K. 1971
  • 1971 Axon elongation: Effect of nerve growth factor on microtubule protein. Experimental Cell Research 66:346-52 (with K. M. Yamada). 1971 Axon elongation: Effect of nerve growth factor on microtubule protein. Experimental Cell Research 66:346-52 (with K. M. Yamada). Wessells, N. K. 1971
  • 1971 Ultrastructure and function of growth cones and axons of cultured nerve cells. Journal of Cell Biology 49:614-35 (with B. S. Spooner and K. M. Yamada). 1971 Ultrastructure and function of growth cones and axons of cultured nerve cells. Journal of Cell Biology 49:614-35 (with B. S. Spooner and K. M. Yamada). Wessells, N. K. 1971
  • 1971 Intra- and extracellular control of epithelial morphogenesis. Developmental Biology Suppl. 4195-249 (with M. R, Bernfield). 1971 Intra- and extracellular control of epithelial morphogenesis. Developmental Biology Suppl. 4195-249 (with M. R, Bernfield). Wessells, N. K. 1971
  • 1970 Some thoughts on embryonic inductions in relation to determination. Journal of Investigative Dermatology 55:221-5. 1970 Some thoughts on embryonic inductions in relation to determination. Journal of Investigative Dermatology 55:221-5. Wessells, N. K. 1970
  • 1970 Mammalian lung development: Interactions in formation and morphogenesis of tracheal Buds. Journal of Experimental Zoology 175: 456-66. 1970 Mammalian lung development: Interactions in formation and morphogenesis of tracheal Buds. Journal of Experimental Zoology 175: 456-66. Wessells, N. K. 1970
  • 1970 Mammalian lung development: Interactions in primordium formation and bronchial Morphogenesis. Journal of Experimental Zoology 175:445-54 1970 Mammalian lung development: Interactions in primordium formation and bronchial Morphogenesis. Journal of Experimental Zoology 175:445-54 Wessells, N. K. 1970
  • 1970 Axon growth: roles of microfilaments and microtubules. Proceedings of the National Academy of Sciences 66: 1206-12 (with K. M. Yamada and B. S. Spooner). 1970 Axon growth: roles of microfilaments and microtubules. Proceedings of the National Academy of Sciences 66: 1206-12 (with K. M. Yamada and B. S. Spooner). Wessells, N. K. 1970
  • 1970 Cytochalasin B: Effects upon microfilaments involved in morphogenesis of estrogen- Induced glands of oviduct. Proceedings of the National Academy of Sciences 66:904-8 (with J. T. Wrenn). 1970 Cytochalasin B: Effects upon microfilaments involved in morphogenesis of estrogen- Induced glands of oviduct. Proceedings of the National Academy of Sciences 66:904-8 (with J. T. Wrenn). Wessells, N. K. 1970
  • 1970 Effects of cytochalasin B upon microfilaments involved in motphogenisis of salivary Epithelium. Proceedings of the National Academy of Sciences 66:360-4 (with B. S. Spooner) 1970 Effects of cytochalasin B upon microfilaments involved in motphogenisis of salivary Epithelium. Proceedings of the National Academy of Sciences 66:360-4 (with B. S. Spooner) Wessells, N. K. 1970
  • Vertebrate Adaptations Wessells, N. K. W.H. Freeman. 1969
  • 1969 An ultrastructural study of lens invagination in the mouse. Journal of Experimental Zoology 171:359-68 (with J. T. Wrenn). 1969 An ultrastructural study of lens invagination in the mouse. Journal of Experimental Zoology 171:359-68 (with J. T. Wrenn). Wessells, N. K. 1969
  • 1969 Phases in cell differentiation. Scientific American 220:2-10 (with W.J.Rutter) 1969 Phases in cell differentiation. Scientific American 220:2-10 (with W.J.Rutter) Wessells, N. K. 1969
  • 1968 Ultrastructual studies of early morphogenesis and cytodifferentiation in the embryonic mammalian pancreas. Developmental Biologr 17:4l3-46 (with J. Evans). 1968 Ultrastructual studies of early morphogenesis and cytodifferentiation in the embryonic mammalian pancreas. Developmental Biologr 17:4l3-46 (with J. Evans). Wessells, N. K. 1968
  • 1968 Problems in the analysis of determination, mitosis and differentiation. In: Epithelial- Mesenchymal Interactions (Fleischmajer, ed.), Ch. 9, pp. 132-51. Williams and Wilkins Co. 1968 Problems in the analysis of determination, mitosis and differentiation. In: Epithelial- Mesenchymal Interactions (Fleischmajer, ed.), Ch. 9, pp. 132-51. Williams and Wilkins Co. Wessells, N. K. 1968
  • 1968 Effects of collagenase on developing epithelia in vitro: lung, ureteric bud, and pancreas. Developmental Biology 18:294-309 (with J. H. Cohen). 1968 Effects of collagenase on developing epithelia in vitro: lung, ureteric bud, and pancreas. Developmental Biology 18:294-309 (with J. H. Cohen). Wessells, N. K. 1968
  • 1968 The ultrastructure of oriented cells and extracellular materials between developing feathers. Developmental Biology 18:42-61 (with Jean Evans). 1968 The ultrastructure of oriented cells and extracellular materials between developing feathers. Developmental Biology 18:42-61 (with Jean Evans). Wessells, N. K. 1968
  • METHODS IN DEVELOPMENTAL BIOLOGY Wessells, N. K., et al Thomas Y. Crowell. 1967
  • 1967 Avian and mammalian organ culture. In: Methods in Developmental Biology, pp. 445-56. Thomas Y. Crowell, New York. 1967 Avian and mammalian organ culture. In: Methods in Developmental Biology, pp. 445-56. Thomas Y. Crowell, New York. Wessells, N. K. 1967
  • 1967 Anchor filament bundles in embryonic feather gems and skin. Journal of Cell Biology 32:236-40 (with F.Kallman and J. Evans). 1967 Anchor filament bundles in embryonic feather gems and skin. Journal of Cell Biology 32:236-40 (with F.Kallman and J. Evans). Wessells, N. K. 1967
  • 1967 Periodic repeat units of epithelial cell tonofilaments. Joumal of Cell Biology 32;227-31 (with F. Kallman). 1967 Periodic repeat units of epithelial cell tonofilaments. Joumal of Cell Biology 32;227-31 (with F. Kallman). Wessells, N. K. 1967
  • 1967 Differentiation of epidermis and epidermal derivatives. New England Journal of Medicine 277 :21-33. 1967 Differentiation of epidermis and epidermal derivatives. New England Journal of Medicine 277 :21-33. Wessells, N. K. 1967
  • 1967 Early pancreas organogenesis: morphogenesis, tissue interactions, and mass effects. Developmental Biology l5: 137-70 (with J. H. Cohen). 1967 Early pancreas organogenesis: morphogenesis, tissue interactions, and mass effects. Developmental Biology l5: 137-70 (with J. H. Cohen). Wessells, N. K. 1967
  • 1967 Normal epidermal basal cell behavior in the absence of basement membrane. Journal of Cell Biology 32:236-40. 1967 Normal epidermal basal cell behavior in the absence of basement membrane. Journal of Cell Biology 32:236-40. Wessells, N. K. 1967
  • 1966 The influence of collagen and embryo extract on the development of pancreatic epithelium. Exp. Cell Research 43:680-4 (with J. H. Cohen). 1966 The influence of collagen and embryo extract on the development of pancreatic epithelium. Exp. Cell Research 43:680-4 (with J. H. Cohen). Wessells, N. K. 1966
  • 1965 Action of actinomycin D on exocrine pancreas cell differentiation. Journal of Molecular Biology 13:767-9 (with F. H. Wilt). 1965 Action of actinomycin D on exocrine pancreas cell differentiation. Journal of Molecular Biology 13:767-9 (with F. H. Wilt). Wessells, N. K. 1965
  • 1965 Nonproliferation in dermal condensations of mouse vibrissae and pelage hairs. Developmental Biology 12:419-33 (with K. D. Roesner). 1965 Nonproliferation in dermal condensations of mouse vibrissae and pelage hairs. Developmental Biology 12:419-33 (with K. D. Roesner). Wessells, N. K. 1965
  • 1965 Morphology and proliferation during early feather development. Developmental Biology 12:131- 53. 1965 Morphology and proliferation during early feather development. Developmental Biology 12:131- 53. Wessells, N. K. 1965
  • 1964 Acquisition of actinomycin-D insensitivity during differentiation of pancreas exocrine cells. Developmental Biology 9:92-114. 1964 Acquisition of actinomycin-D insensitivity during differentiation of pancreas exocrine cells. Developmental Biology 9:92-114. Wessells, N. K. 1964
  • 1964 Review of primary embryonic induction. Science l46:l031-2. 1964 Review of primary embryonic induction. Science l46:l031-2. Wessells, N. K. 1964
  • 1964 Substrate and nutrient effects upon epidermal basal cell orientation and proliferation. Proceeding of the National Academy of Sciences 52:2S2-9. 1964 Substrate and nutrient effects upon epidermal basal cell orientation and proliferation. Proceeding of the National Academy of Sciences 52:2S2-9. Wessells, N. K. 1964
  • 1964 Control of specific synthesis in the developing pancreas. In: National Cancer Institute Monograph No. I 3, Symposium: Metabolic Control Mechanisms, pp. 5 l-65 (with W. J. Rutter and C. Grobstein). 1964 Control of specific synthesis in the developing pancreas. In: National Cancer Institute Monograph No. I 3, Symposium: Metabolic Control Mechanisms, pp. 5 l-65 (with W. J. Rutter and C. Grobstein). Wessells, N. K. 1964
  • 1964 Tissue interactions and cytodifferentiation. Journal of Experimental Zoology 1S7:39-152. 1964 Tissue interactions and cytodifferentiation. Journal of Experimental Zoology 1S7:39-152. Wessells, N. K. 1964
  • 1964 DNA synthesis, mitosis and differentiation in pancreatic acinar cells in vitro. Journal of Cell Biology 20:415-33. 1964 DNA synthesis, mitosis and differentiation in pancreatic acinar cells in vitro. Journal of Cell Biology 20:415-33. Wessells, N. K. 1964
  • 1963 Effects of extra-epithelial factors on the incorporation of thymidine by embryonic epidermis. Experimental Cell Research 30:36-55. 1963 Effects of extra-epithelial factors on the incorporation of thymidine by embryonic epidermis. Experimental Cell Research 30:36-55. Wessells, N. K. 1963
  • 1962 Tissue interactions during skin histodifferentiation. Developmental Biology 4:87-107. 1962 Tissue interactions during skin histodifferentiation. Developmental Biology 4:87-107. Wessells, N. K. 1962
  • 1961Thyroxine initiation of epidermal differentiation as studied in vitro in chemically defined medium. Experimental Cell Research 24: 13 l -42 1961 Thyroxine initiation of epidermal differentiation as studied in vitro in chemically defined medium. Experimental Cell Research 24: 13 l -42 Wessells, N. K. 1961
  • 1961 An analysis of chick epidermal differentiation in situ and in vitro in chemically defined media. Developmental Biology 3:355-89. 1961 An analysis of chick epidermal differentiation in situ and in vitro in chemically defined media. Developmental Biology 3:355-89. Wessells, N. K. 1961
  • 1960 Initiation by thyroxine of chick epidermal differentiation in protein-free chemically defined medium. Anatomical Record l38:388. 1960 Initiation by thyroxine of chick epidermal differentiation in protein-free chemically defined medium. Anatomical Record l38:388. Wessells, N. K. 1960
  • 1953 Relation of the micropyle to cortical changes at fertilization in the egg of Fundulus heteroclitus. Anatomical Record 1 17:557-8 (with F .J. Swartz). 1953 Relation of the micropyle to cortical changes at fertilization in the egg of Fundulus heteroclitus. Anatomical Record 1 17:557-8 (with F .J. Swartz). Wessells, N. K. 1953