Wur-Yow 



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

 Univ. Bonn, BONN, Deutsche Bundesrepublik 



a. Beeinflussung des Wachtsums und der Differenzierung durch Wirkstoffe 

 (Schilddrusenhormon, Steroide, Thymuswirkstoffe). Lebistes spec, Xe- 

 nopus laevis, Gallus domesticus (Vertebrata) 



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

 dende Bedeutung der Gewebe. Bufo spec, Xenopus laevis (Anura) , Gal- 

 lus domesticus (Aves) 



WYTTENBACH, C. R. A.B., M.A., Ph.D. — Dept. of Anat., Univ. of 

 Chicago, CHICAGO 37, 111., U.S.A. 



a. Ontogeny of molecular specificity in the central nervous system. Gal- 

 lus domesticus (Aves) 



b. Gross and molecular changes during development and aging of hy- 

 dranths. Campanularia flexuosa (Hydroidea) 



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



Med., Avenida 28 de Maio, LISBOA, Portugal 

 a. Development of the neurohypophysis. Oryctolagus cuniculus ( Lagomor- 



pha) 

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



Metropolitan Univ., Setagaya-ku, TOKYO, Japan 



a. Effect of oxygen tension on the types of malformation. Chironomus 

 dorsalis (Diptera) 



b. Effect of partial irradiation by ultraviolet light on the types of mal- 

 formation. Chironomus dorsalis (Diptera) 



YAMADA, T. D.Sc, F.I.I.E., Prof. — Biol. Div., Oak Ridge National Lab., 

 P.O. Box Y, OAK RIDGE, Tenn., U.S.A. 



a. Does clonal selection occur during embryonic induction? Triturus spec. 

 (Urodela) 



b. Nuclear RNA synthesis in embryonic induction and regeneration. Tri- 

 turus spec (Urodela) (in collaboration with D. PRESCOTT and S. 

 KARASAKI) 



c Immunochemical analysis of the induction process. Triturus pyrrhogaster 



(Urodela) (in collaboration with T. S. OKADA, Kyoto, and K. TA- 



KATA, Berkeley) 

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



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

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



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



Japan 



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



b. Electron microscopical studies of oogenesis. (Teleostei) 

 YAMAMOTO, T. D.Sc, M.I.I.E., Prof. — Biol. Inst., Fac. of Sci., Nagoya 



Univ., Chikusa-ku, NAGOYA, Japan 



a. On the mechanism of fertilization and activation. Oryzias latipes (Te- 

 leostei) 



b. Artificial induction of functional sex-reversal. Oryzias latipes (Teleostei) 

 c Melanin formation in color phenotypes. Oryzias latipes (Teleostei) (in 



collaboration with T. HISHIDA and H. TOMITA) 

 YAMAMOTO, T. S. M.Sc, D.Sc. — Dept. of Zool., Fac. of Sci., Hokkaido 

 Univ., North 8, West 5, SAPPORO, Japan 



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