a Specific RNA and protein synthesis during kidney tubulogenesis; control mechanisms acting in 



early stages of secondary induction; characterization of a neural factor responsible for tubule 



initiation. Mus musculus (Rodentia) 

 b Control of translation at the ribosomal level during organogenesis. Same species as a 

 c Brain differentiation; correlation between tetrodotoxin binding and brain function; comparison 



of development in two phyla. Callus domesticus (Aves), Mus musculus (Rodentia) 

 d Biochemical changes in aging and developing brain. Mus musculus, Rattus rattus (Rodentia) 

 UPHOLT, W. B.; Ph.D. - Dept. of Fmbryol., Carnegie Inst, of Wash., 115 W. University Parkway, 



BALTIMORE, MD 21210, U.S.A. 

 URIST, M. R.; M.D. - Bone Res. Lab., Univ. of Calif., 1000 Veteran Ave., RmA3-34, LOS 



ANGELES, CA 90024, U.S.A. 

 a Bone morphogenesis: the physiology and biochemistry of bone matrix in health and disease; the 



regulation of bone generation, growth and regeneration by a new enzyme system, BMP-BMPase. 



(MammaUa) 

 b Calcification and ossification. (MammaUa) 



VACQUIER, V. D.;Ph.D. - Zool. Dept., Univ. of California, DAVIS, CA 95616, U.S.A. 

 a Morphology and biochemistry of fertilization. (Echinoidea) 

 VAFOPOULOU-MANDALOS, Mrs. X.; M.A. - Biol. Sci. Group, Univ. of Connecticut, Box U-42, 



STORRS, CT 06268, U.S.A. 

 a Protein synthesis during larval development. Chironomus spec. (Diptera) 

 VALDEZ TOLEDO, Mrs. C. L. - Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 461, S. M. de 



TUCUMAN, Argentina 

 a Descriptive analysis of oogenesis. Bufo arenarum (Anura) 

 VANABLE, J. W., Jr.; Ph.D., Assoc. Prof. - Dept. of Biol. Sci., Purdue Univ., WEST LAFAYETTE, 



IN 47907, U.S.A. 

 a Tlie possibihty of selectivity in neuromuscular associations: extrinsic ocular muscles. Xenopus 



laevis (Anura) 

 b Visual mutants as a tool to study eye development. Mus musculus (Rodentia) 

 c I'^lectrical currents and regeneration. Rana pipiens, Triturus viridescens, Xenopus laevis 



(Amphibia) 

 VAN ALTEN, P. J.; Ph.D., Prof. - Dept. of Anat., Coll. of Med., Univ. of Illinois, P. O. Box 6998, 



CHICAGO, IL 60680, U.S.A. 

 a Ontogeny of the immunological mechanism. Gallus domesticus (Aves) 

 b Development of lymphocyte competence to respond to mitogens in vitro. Gallus domesticus 



(Aves), Rattus norvegicus (Rodentia) 

 c Development of antigenic components in the brain. Mesocricetus auratus (Rodentia) 

 d Isotope studies of blood cell formation, especially lympliocytopoiesis. Same species as a 

 VAN EXAN, R. - Dept. of Biomed. Sci., Ontario Vet. Coll., Univ. of Guelph, GUELPH, Ont. NIG 



2W2, Canada 

 a Induction of mucous metaplasia of skin and hair follicles in vitro by vitamin A (electron 



microscopy, separation and recombination of dermis and epidermis, autofluoresccnce of 



vitamin A). Mus musculus (Rodentia) 

 b Differentiation of the dermis, its cell types and intercellular matrix in 12-18 day embryos 



(histochemistry, light and electron microscopy). Same species as a 

 VAN STONE, J. M.; Ph.D., Prof. - Dept. of Biol., Trinity Coll., HARTFORD, CT 06 106, U.S.A. 

 a Influence of thyroxine upon the regenerative capacity of the tadpole hindlimb. Rana sylvatica 



(Anura) 

 VARMA, H. C; Ph.D., Prof. - Dept. of Anat., G.S.V.M. Med. Coll., KANPUR 208002, India 

 VARON, S. S.; M.D., Prof. - Dept. of Biol., M-OOl, Univ. of Calif. San Diego, LA JOLLA, CA 92093, 



U.S.A. 

 a In vitro differentiation of nerve tissue. Gallus domesticus (Aves) and others 

 b Growth- and differentiation-promoting agents from the submaxillary gland. Mus musculus 



(Rodentia) 

 c Gha-neuron interactions in vitro. Gallus domesticus (Aves), Mus musculus (Rodentia) and others 

 d Development of glial and neuronal surface membrane constituents. Same species as c 

 VAUGHN, J. 1-.; Ph.D. Div. of Neurosci., City of Hope Med. Ctr., 1500 i:. Duarte Rd.. DUARTE, 



CA 91010, U.S.A. 

 a Development of neuroglial cells in the central nervous system (electron microscopy and auto- 

 radiography). Rattus domesticus (Rodentia) 

 b I'lcctron microscopy of spinal cord development. Rattus domesticus, Mus musculus (Rodentia) 

 VENEZIANO, P. P.; Ph.D., Assoc. Prof. - Dept. of Biol., Wilbur Wright Coll., 3400 N. Austin Ave., 



CHICAGO, IL 60634, U.S.A. 

 VI;NZKI:, W.G.; Ph.D., Prof. - Dept. of Vet. Anat., Coll. of Vet. Med., Ohio State Univ., 1900 



Coffey Rd., COLUMBUS, OH 43210, U.S.A. 

 a Morphogenesis and physiology of ultimobranchial gland, pineal gland and blood (Aves) 

 VERRUSIO, A. C; Ph.D. - Dept. of Anat., Div. of Biol. Sci., Univ. of Chicago, 1025 East 57th St., 



CHICAGO, IL 60637, U.S.A. also: Am. Dent. Assoc, 211 E. Chicago Ave., CHICAGO, 



IL. 60611, U.S.A. 

 VIDIC, B.; S.D. - Dept. of Anat., Georgetown Univ., 3900 Reservoir Rd., N.W., WASHINGTON, 



D.C. 20007, U.S.A. 

 VINCENT, W. S.; Ph.D., Prof. - Dept. of Biol. Sci., Univ. of Delaware, NEWARK, DE 19711, U.S.A. 

 a Control of ribosome formation in early oocytes; nucleolar chemistry of oocytes. Mytilus eduUs, 



Spisula solidissima (Lamellibranchia), Asterias forbesii (Asteroidea), Arbacia punctulata 



(Echinoidea) 



92 



