Sta-Ste 



a. Meristems and cell differentiation; embryonization of specialized cells. 



Riella helicophylla (Hepaticae) 

 STAPLES, R.E. B.S.A.. M.Sc, Ph.D. — Worcester Foundation for Exp. 



Biol., 222 Maple Avenue, SHREWSBURY. Mass., U.S.A. 

 a. Zygote development (physiological, biochemical). Oryctolagus cunicu- 



lus (Lagomorpha) , Rattus norvegicus (Rodentia) 

 h. Induction of pseudo pregnancy (physiological). Oryctolagus cuniculus 



(Lagomorpha) , Rattus norvegicus (Rodentia) 

 c. Teratology. Oryctolagus cuniculus (Lagomorpha) , Rattus norvegicus 



(Rodentia) 

 STARCK, D. Dr.Med., M.I.I.E., Prof. — Dr. Senckenberg. Anat. Inst.. 



Med. Fak. der Univ., Ludwig Rehnstr. 14, FRANKFURT/Main-Siid. 



Deutsche Bundesrepublik 

 STEDING, G. Dr.med. — Anat. Inst, der Univ., Kreuzbergring 36, GoT- 



TINGEN. Deutsche Bundesrepublik 



a. Experimente zur Entwicklung des Riickenmarkes. Gallus gallus (Aves) 



b. Selbstdif ferenzierung der Somiten. Gallus gallus (Aves) 



c. Friihentwicklung. Gallus gallus (Aves) 



d. Strukturentwicklung des Uterus. Homo sapiens (Primates) 

 STEFAN, Miss Y. Dr.es Sci. — Lab. de Zool. et d'Embryol. exper., Fac. 



des Sci.. Univ. de Strasbourg. 12 Rue de I'Universite, STRASBOURG, 



France 

 a. Morphogenese du tractus genital et des gonades. Emys leprosa (Chelo- 



nia) , (Ophidia) 

 STEFANELLI, A. Dr.. M.I. I.E.. Prof.ord. — 1st. di Anat. comp. "G.B. 



Grassi". Fac. di Sci.. Univ. di Roma, Via Borelli 50. ROMA, Italia 

 STEGNER. H.-E. Dr.med. — Frauenklinik der Univ.. Univ.-Krankenhaus 



Eppendorf. Martinistr. 52, HAMBURG 20. Deutsche Bundesrepublik 



a. Histotopochemische und elektronenmikroskopische Untersuchungen an 

 Oozyten verschiedener Reife. Homo sapiens (Primates) (in Zusammen- 

 arbeit mit H.WARTENBERG) 



b. Organogenese des weiblichen Genitaltraktes: histotopochemische und 

 elektronenmikroskopische Untersuchungen. Homo sapiens (Primates) 



STEIN. Miss K.F. A.B.. M.S.. Ph.D., Prof. — Dept. of Biol. Scis., Clapp 

 Lab., Mount Holyoke Coll., SOUTH HADLBY, Mass.01075, U.S.A. 

 a. The culture in vitro of mutant embryos, e.g. Lp/Lp; tracer studies. 

 (Rodentia ) 



STEINBERG, D. M. Dr.Biol.Sci.. Prof. — Zool. Inst., Acad, of Sci. of the 

 U.S.S.R., Universitetskaja Nabereshnaja 1, LENINGRAD B-164, 

 USSR 



STEINBERG, M.S. B.A.. M.A., Ph.D., Prof. — Dept. of Biol.. Johns Hop- 

 kins Univ., Charles and 34th Sts.. BALTIMORE, Md. 21218, U.S.A. 



a. Mechanisms of morphogenetic movement: study of organization patterns 

 adopted by gastrula tissues recombined in vitro. Rana pipiens (Anu- 

 ra) (in collaboration with J.L.KELLAND) 



b. Mechanisms in cell aggregation and tissue reconstruction (kinetics of 

 cell colhsions. stability and strength of cellular adhesions, cell popula- 

 tion behaviour). (Porifera). Rana pipiens (Anura), Gallus domesticus 

 (Aves) 



c. Physics and chemistry of cell surfaces in relation to cell adhesion (titra- 

 tion of charged groups at cell surfaces by microelectrophoresiis of living 



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