Wrb-Zaa 



WRBA, H. Dr.rer.nat, Dr.med. — Pathol. Inst, der Univ., Thalkirchnerstr. 

 36, MQNCHEN, Deutschland 



a. Stoffwechsel in vitro. (Rodentia) 



b. Eihautbildung und Differenzierung in vitro. (Rodentia) 



c. Heterotransplantation von Tumoren. (Rodentia) 

 WR6BLEWSKI, R. Dr.Med. — Chair of Gener. Biol., Silesian Acad, of 



Med., Rokitnica, ZABRZE 8, Poland 



a. Regeneration of the thyroid gland. Cavia cobaya (Rodentia) 



b. Cytological and histochemical investigations on the regenerating tail. 

 Xenopus laevis (Anura) 



c. Sex determination. 



WURMBACH, H. Dr., Prof. — Entwicklungsgesch. Abt., Zool. Inst, der 

 Univ. Bonn., BONN, Deutschland 



a. Beeinflussung des Wachstums und der Differenzierung durch Wirk- 

 stoffe (Schilddrusenhormon, Steroide, Thymuswirkstoffe). Lebistes spec, 

 Xenopus laevis, Bufo spec, Gallus spec. (Vertebrata) 



b. Formbildende Krafte beim Wachstum (Wachstumsdynamik); formbil- 

 dende Bedeutung der Gewebe. Bufo spec. (Anura) , (Aves) 



WYTTENBACH, C. R. A.B., M.A. — Dept. of Embryol., Carnegie Inst. 



of Washington, Wolfe and Madison Sts., BALTIMORE 5, Md., U.S.A. 

 a. Actively acquired tolerance to tissue-specific proteins. (Mammalia) 

 XAVIER MORATO, M. J. Prof. — Inst, de Histol. e Embriol., Fac de 



Med., Avenida 28 de Maio, LISBOA, Portugal 



(no embryological work in progress) 

 YAFFE, D. M.Sc — Dept. of Exper. Biol., Weizman Inst, of Sci., REHO- 



VOTH, Israel 

 YAJIMA, H. M.A. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo 



Metropolitan Univ., Setagaya-ku, TOKYO, Japan 



a. Effect of centrifugal force on the types of malformation. Chironomus dor- 

 salis (Diptera) 



b. Effect of oxygen tension on the types of malformation. Chironomus dor~ 

 salis (Diptera) 



YAMADA, T. D.Sc, F.I. I.E., Prof. — Biol. Inst., Fac. of Sci., Nagoya 

 Univ., Chigusa-Ku, NAGOYA, Japan 



a. Purification of the mesoderm-inducing factor of the bone-marrow, testing 

 its effects in solution. (Urodela, Mammalia) (in collaboration with K. 

 TAKATA) 



b. Test of the inductive effect of solutions of RNA's prepared from various 

 tissues on the isolated ectoderm. (Urodela, Mammalia) (in collaboration 

 with S. OSAWA) 



YAMAGAMI, K. — Biol. Inst., Coll. of Gener. Education, Univ. of Tokyo, 

 865 Komaba-cho, Meguro-ku, TOKYO, Japan 



a. Apyrase activity and ATP content in developing skin. Rattus spec. (Ro- 

 dentia) 



b. Apyrase and succinoxidase in embryos. ( Echinoidea) 

 c Phosphorus metabolism. (Teleostei, Echinoidea) 



YAMAMOTO, K. M.Sc, D.Sc, Prof. — Lab. of Fresh-water Fish Culture, 

 Dept. of Biol., Fac. of Fish., Hokkaido Univ., HAKODATE, Japan 

 a. Histo-physiological studies of oogenesis. (Teleostei) 



YAMAMOTO, T. D.Sc, Prof. — Biol. Inst., Fac. of Sci., Nagoya Univ., 

 Chigusa-Ku, NAGOYA, Japan 



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