., Developmental aspects ol conjugation (autoradiography, electron microscopy, density gradient 

 centrifugation, electrophoresis, cell cycle analyses, chemical mutagenesis, surface probes). Tetra- 

 hyrr.ena pyriformis (CUiata) 



b Regulation of ribosomal RNA synthesis during the cell cycle (selection synchrony, moleculax 

 hybridization, electropliorcsis). Same species as a 



WOLK, M.; M.Sc. Dept, of Zool., Hebrew Univ., JERUSALEM, Israel 



a A study of the differentiation and movement of the hypoblast cells based on antigenic differ- 

 ences between epiblast and hypoblast. Callus spec. (Aves) 



WOLSKY A.; Dr.phil., Prof. - Dept. of Radiol., New York Univ. Med. Center, 550 First Ave., NEW 

 YORK, N.Y. 10016, U.S.A. ISDB 



a Effect of anti-metabolites, antibiotics (especially actinomycin) and nucleic acids on development 

 and regeneration. Paracentrotus lividus, Arbacia punctulata (Echinoidea), Triturus viridescens, 

 Rana pipiens (Amphibia) 



b A re-investigation of the influence of neurogenesis on the development of the compound eye. 

 Bombyx mori (Lepidoptera) 



c Effect of ultrasound on development and regeneration. Triturus viridescens, Rana pipiens 

 (Amphibia) 



d Possible stimulatory effect of small doses of X-rays on regeneration. Triturus viridescens (Uro- 

 dela) 



WOOD J. C; Ph.D., Prof. - Sect, of Neurobiol., Univ. of Texas Med. Sch. at Houston, 6400 West 

 Cullen St., HOUSTON, Tex. 77025, U.S.A. 



a Histochemistry and electron microscopy of developing adrenomedullary cells. Mus musculus 

 (Rodentia) 



WOODS, J. E.; Ph.D., Assoc. Prof. - Dept. of Biol. Sci., De Paul Univ., 1036 W. Belden Ave., 

 CHICACO, III. 60614, U.S.A. 



a Histochemistry of androgens and estrogens in the gonads and adrenals of the developing embryo. 

 Gallus domesticus (Aves) 



b Gonadal morphogenesis. Same species as a 



c Radioimmuno assay of plasma testosterone and 17/3-estradiol levels in the developing embryo. 

 Same species as a 



WOURMS, J. P.; Ph.D. New York Ocean Sci. Lab., P.O. Drawer EE, MONTAUK, NY 1 1954, U.S.A. 



ISDB 



a Cellular aspects of spontaneous dispersion-reaggregation during early development; description of 

 embryogenesis in the reaggregation mass; experimental analysis of development; biochemistry of 

 development; physiological and genetic basis of embryonic diapause. Annual fishes: Austro- 

 fundulus spec, Cynolebias spec, Pterolebias spec, Nothobranchius spec, Aphyosemion spec. 

 (Cyprinodontoidei, Teleostei) 



b Oogenesis; egg transport; oviduct differentiation; sperm storage; fertilization and early develop- 

 ment; fetal and maternal adaptations for viviparity (ultrastructure, biochemistry, physiology). 

 Isurus spec, Prionace spec, Carcharinus spec, Mustelus spec. (Galeoidea), Squalus spec, Hetero- 

 dontus spec. (Squaloidea, Pleurotremata), Raja spec, Dasyatus spec. Myliobatis spec. (Batoidea, 

 Hypotremata), Hydrolagus spec. (Holocephali, Elasmobranchii) 



WRIGHT, D. A.; Ph.D. - Dept. of Biol., Cancer Center, Univ. of Texas, M.D. Anderson Hosp. and 

 Tumor Inst., HOUSTON, Tex. 77025, U.S.A. 



a Developmental genetics of enzymes in experimental hybrid embryos (gene activation and expres- 

 sion). Rana pipiens (Anura), Xiphophorus maculatus, X. helleri and hybrids (Teleostei) 



b Control of gene expression (enzymes) in diploid, haploid, and nuclear transplant hybrids. Rana 

 pipiens and subspecies (Anura) 



WRIGHT, Th. R. E.; Ph.D., Assoc. Prof. - Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHAR- 

 LOTTESVILLE, Va. 22903, U.S.A. 



a The genetic control of enzyme activity during development. Drosophila melanogaster (Diptera) 



b Temperature sensitive lethal mutations affecting embryogenesis. Same species as a 



c Genetic control of myogenesis. Same species as a 



WU, G. J. - 150 W. 225th St., Sec. 8- 17 A, NEW YORK, Bronx, NY 10463, U.S.A. 



a Regulation of nucleic acid and protein synthesis in a cell-free transcription-translation-coupled 

 animal system using differentiated or embryonic cells. 



WUDL, Mrs. L.; Ph.D. - Dept. of Reprod. Biol., Merck Inst, for Therap. Res., RAHWAY, N.J. 07065, 

 U.S.A. 



a Studies on fertilization. (Mammalia) 



WYATT, G. R.; Ph.D., Prof. - Dept. of Biol., Queen's Univ., KINGSTON, Ont. K7L 3N6, Canada 



a Protein synthesis, RNA and ribosomes; changes during hormone action and metamorphosis. 

 Hyalophora cecropia, Manduca sexta (Lepidoptera) 



b Protein synthesis and transport in oogenesis; regulation by hormones. Hyalophora cecropia 

 (Lepidoptera), Locusta migratoria (Orthoptera) and other spp. (Insecta) 



WYTTENBACH, Ch. R.; Ph.D. - Dept. of Physiol, and Cell Biol., Univ. of Kansas, LAWRENCE, KS 

 66044, U.S.A. 



YAFFE, D.; Dr. - Dept. of Cell Biol., Weizmann Inst, of Sci., P.O. Box 26, REHOVOT, Israel ISDB 



YAJIMA, H.; Ph.D. - Dept. of Biol., Fac of Sci., Ibaraki Univ., Bunkyo-2-chome, MITO, Japan 



a Malformations induced by irradiation with monochromatic ultraviolet light. Chironomus dorsalis 

 (Diptera) 



b Effects of temperature during and after centrifugation of eggs on the production of double 

 malformations. Same species as a 



c Effect of ultraviolet irradiation upon the re-entry of pole cells (electron microscopy). Same 

 species as a 



94 



