Williams 96 Wing 



WILLIAMS, S. C. B.S., Ph.D., Asst Prof. — Dept of Anat., School of 

 Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A. 



a. Tissue culture of young isolated neuroblasts from special areas of brain, 

 esp. cerebellum, trigeminal. Chick and Man (Higher Vertebrates) 

 (in collaboration with Miss M. J. HOGUE) 



b. Early development of human teeth. (Mammals) 



WILLIAMS, T. W. B.S.. M.S., Ph.D., Prof. — School of Med., West 

 Virginia Univ., MORGANTOWN, W.Va., U.S.A. 

 (no data received over this year) 



WILLIER, B. H. B.S., Ph.D., D.Sc, Prof. — Dept of Biol., John Hopkins 

 Univ., Charles and 34th Strs, BALTIMORE 18, Maryland, U.S.A. 



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) 



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 

 regeneration. (Vertebrates) 



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

 LAWRENCE, Kan., U.S.A. 



a. Development of all systems of the toadfish in relation to behavior. 

 Opsanus tau (Pisces) (in collaboration with H. C. TRACY and Th. 

 BATTY) 



b. Pharmacodynamics of the development of the toadfish. Opsanus tau 

 (Pisces) 



WINDLE, W. F. B.S., M.S., Ph.D., Sc.D., Prof. — Dept of Anat, Univ. 

 of Pennsylvania, School of Med., PHILADELPHIA 4, Pa, U.S.A. 



a. Development of fiber tracts in brain of human embryos of 4th to 7th 

 week. (Mammalia) 



b. Development of chromophil substance in central nervous system neurons. 

 Guinea pig and man (Mammalia) (in collaboration with A. LAVELLE) 



c. Regeneration in mammalian central nervous system. (Recovery of neurons 

 following trauma, alterations in their internal environment). Car and dog 

 (Mammalia) (in collaboration with J. C. LIU and other coworkers) 



d. Changes in pulmonary blood volume at birth and in early postnatal life. 

 Guinea pig (Mammalia) (in collaboration with T. P. SINHA) 



e. Structure of the coronary arteries at birth. Man (Mammalia) 



f. Extramedullary hemopoesis in the rabbit and car induced by bacterial 

 pyrozenic extracts. (Mammalia) 



g. Regeneration in the spinal cord of the cat and dog. (Mammalia) (in 

 collaboration with W. W. CHAMBERS) 



WINGSTRAND, K. G. Fil.lic. — Embryol. Dept, Zool. Inst., Univ. of 

 Lund, LUND, Sweden, 

 a. Embryology of birds, esp. development of hypophysis and vessels in 

 connection with them. 



