a. The mechanism of interaction of melanoblasts of known genotype with 

 feather papilla in the production of feather pigmentation pattern. Gallus 

 domesticus (various varieties) (Aves) 



b. Factors regulating migration of melanoblasts and their growth (multi- 

 plication) and differentiation (synthesis of specific melanin granules). 

 Gallus domesticus (various varieties) (Aves) 



c. The role that sex and other hormones play in modifying the phenotypic 

 expression of melanoblasts in color pattern formation. Gallus domesticus 

 (various varieties) (Aves) 



d. Ontogeny of endocrine correlation. 



WILSON, J. G. B.A.. M.A., Ph.D. — Dept of Anat.. College of Med., Univ. 

 of Cincinnati. CINCINNATI 8. Ohio, U.S.A. 

 a. Mechanism of the teratogenic action of trypan blue. Teratogenic action 

 of azo dyes (survey). Rattus (albino) (Rodentia) 



WILSON, J. W. Ph.D., Prof. — Arnold Biol. Lab.. Brown Univ.. PROVI- 

 DENCE 12. R.I.. U.S.A. 

 a. A study of mitotic activity and other cytological phenomena in liver rege- 

 neration. (Vertebrata) 



WINBLAD, J. A.B. — Dept of Anat., Med. School, Univ. of Kansas, LAW- 

 RENCE, Kansas. U.S.A. 



a. Development of all systems in relation to behaviour. Opsanus tau (Tele- 

 ostei) (in collaboration with H. C. TRACY and Th. BATTY) 



b. Pharmacodynamics of development. Opsanus tau (Teleostei) 

 WINDLE. W. F. B.S., M.S.. Ph.D., Sc.D. — Section Devel. and Regen., 



Lab. of Neuroanatomical Sci., NINDB, Nat. Inst, of Health, BETHES- 

 DA. Md. U.S.A. 



a. Factors influencing regeneration of nerve fibers in the central nervous 

 system of adult animals. (Mammalia) 



b. Development of fiber tracts and nuclei in the brain. Homo (Primates) 



c. Effects of asphyxia neonatorum on brain structure and function. Various 

 species. 



WINGSTRAND. K. G. Dr Phil. — Embryol. Dept.. Zool. Inst.. Univ. of 

 Lund, LUND. Sweden 



WINOWSKA. Mrs J. M.Sc. — Zaklad Anat. Porownawczej. Inst. Zool. 

 Uniw.. ul. Sienkiewicza 21. WROCLAW. Poland 

 a. Development of the air-bladder. (Euphysoclisti, Teleostei) 



WISELY. Miss V.M. — Dept of Zool.. Canterbury Univ. Coll.. CHRIST- 

 CHURCH. New Zealand 

 a. Embryology. Hijla ewingi (Anura) 



WISLOCKI. G. B. F.I.I.E.. M.D.. A.M., Sc.D., Prof. — Dept of Anat., 

 Harvard Univ., Med. School, 25 Shattuck St, BOSTON 15, Mass., 

 U.S.A. 



a. Studies of the placenta. Histochemistry. Equus caballus (Perissodactyla) 

 (in collaboration with E. W. DEMPSEY and E. C. AMOROSO) 



b. The placenta studied by means of the electron microscope. Felis domes- 

 tica (Carnivora) (in collaboration with E. W. DEMPSEY) 



c. The cytology, histochemistry and electron microscopy of the granular 

 cells of the metrial gland of the gravid female. Rattus norvegicus (Roden- 

 tia) (in collaboration with L. B. WEISS, M. BURGOS and R. ELLIS) 



WITSCHI, E. F.I.I.E.. Ph.D.. Prof. — Dept of Zool.. State Univ. of Iowa, 

 IOWA CITY. Iowa, U.S.A. 



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