Ruts-San 



c. Origin of the immunologically competent cell. Gallus gallus (Aves) 

 RUTSCHKY, C. W. Ph.D. — Dept. of Zool. & Entomol., Pennsylvania 



State Univ., University Park. Pa., U.S.A. 

 RYCHTER, Z. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, 



PRAHA 2, Czechoslovakia 



a. Experimental morphology of the aortic arches and of the heart loop. 

 Gallus domesticus (Aves) 



b. Experimental analysis of cardiovascular anomalies. Gallus domesticus 

 (Aves) 



c. Embryonic microhaemodynamics. Gallus domesticus (Aves) 

 RYCZKOWSKI, Mrs. M. Dr. — Dept. of Plant Physiol.. Jagiellonian Univ., 



Gordzka 53, KRAKOW, Poland 

 a. Physico-chemical properties of developing ovules. (Monocotyledona, Di- 

 cotyledona) 

 RZEHAK, K. F. M.Sc. — Dept. of Biol, and Embryol., Acad, of Med., ul. 

 Kopernika 7, KRAK6W, Poland 



a. Neural competence of the ectoderm. Amby stoma mexicanum (Urodela) 



b. Cytokinesis in eggs. Xenopus laevis, Triturus alpestris (Amphibia) 



c. Stimulation of the regeneration process by blastemal tissue homogenates. 

 Amby stoma mexicanum (Urodela) (in collaboration with K. MARON 

 andS. SKOWRON) 



SABBADIN, A. Dr., Prof. — 1st. di Zool. e Anat. Comp., Fac. di Sci., Via 

 Loredan 10, PADOVA, Italia 



a. Gonad development. Influence of thyroidectomy and hypophysectomy: 

 role of mesonephros and adrenals. (Amphibia) 



b. Genesis of pigments. (Botryllidae, Ascidiacea) 



SAEKI, Y. Dr. — Nat. Inst, of Animal Industry, CHIBA-shi, Japan 



a. Action of semen inducing rupture of yolk membrane. (Mammalia) 



b. Sex differentiation, with special reference to asymmetrical development 

 of bilateral gonads. Gallus domesticus (Aves) 



c Artificial ovulation of excised follicles. (Mammalia) 



d. Effects of some chemical substances on malformation of embryo. Gallus 

 domesticus (Aves) 



SAITO, T. M.Sc. — Dept. of Anat., Kansai Med. School, Fumizono-cho, 



Moriguchi, OSAKA, Japan 

 SAKAI, H. Ph.D. — Embryol. Section, Dept. of Biol., Fac. of Sci.. Tokyo 



Metropolitan Univ., Setagaya-ku, TOKYO, Japan 



a. The behaviour of a thread model made with a protein fraction of the 

 egg. (Echinoidea) 



b. Sulfhydryl groups during cleavage of the egg. (Echinoidea) 



SAKAI, Mrs. Y. T. M.A. — Embryol. Section, Dept. of Biol., Fac. of Sci., 



Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan 

 a. Bipolar differentiation after partial fertilization and activation. Oryzias 



latipes (Teleostei) 

 SAKURAI, T. M.D. — Research Inst, of Environmental Med., Nagoya 



Univ., Furo-cho, Chikusa-ku, NAGOYA, Japan 

 a. Study on X-ray malformations of the eye. Mus musculus (Rodentia) 



.(in collaboration with U. MURAKAMI and Y. KAMEYAMA) 

 SALA, M., S.J. Dr., M.I.I.E., Prof. — 1st. di Zool. e Anat. Comp., Fac. di 



Sci., Via Loredan 10, PADOVA, Italia 



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