a Thyroxine and m-RNA synthesis in tadpole tissues. Xenopus laevis (Anura) (in collab- 

 oration with R. WEBER) 



STAGNI, Miss A. Dr.. Prof. - 1st. di Zool., Fac. di Sci.. Univ. di Bologna, Via S. Giacomo 

 9. BOLOGNA. Italia 



a Sex determination and sex differentiation. Chlorohydra viridissima (Hydroidea) 



h Cytochemical and electron microscopical study of oogenesis and spermatogenesis. 

 Chlorohydra viridissima (Hydroidea) 



c Cytometric, cytochemical and biochemical study of nucleolus during oogenesis. Spirorbis 

 pagenstccheri (Serpulidae, Polychaeta) 



d Inhibition by antibiotics of steroid hormone-induced sex-reversal in tadpoles. Rana 

 dalmatina (Anura) 



STANGE, Miss L. Dr.rer.nat., Prof. — Inst, fiir Botanik, Techn. Hochschule, Herrenhauser 

 Str. 2. 3 HANNOVER, Deutsche Bundesrepublik 



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

 (Hepaticae) 



STAPLES, R. E. Ph.D. — Worcester Found, for Exp. Biol., 222 Maple Ave., SHREWS- 

 BURY, Mass. 01545, U.S.A. 



a Zygote development (physiological, biochemical). Oryctolagus cuniculus ( Lagomorpha) , 

 Rattus norvegicus (Rodentia) 



b Induction of pseudo-pregnancy (physiological). Oryctolagus cuniculus (Lagomorpha), 

 Rattus norvegicus (Rodentia) 



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



• STARCK. D. Dr.med., Prof. — Dr.Senckenberg Anat. Inst., Med. Fak. der Univ., Ludwig 



Rehnstr. 14, FRANKFURT/Main-Sud, Deutsche Bundesrepublik 

 STASTNY, F. M.D. — Lab. of Embryophysiol., Inst, of Physiol., Fac. Gen. Med., Charles 



Univ., Albertov 5, PRAHA 2, Czechoslovakia 

 a Development of extracellular and intracellular environment of foetal brain tissue (physical 



and chemical). (Aves; Mammalia) 

 STEARNER, Miss S. P. Ph.D. — Div. of Biol, and Med. Research, Argonne Natl. Lab.. 



9700 South Cass Ave., ARGONNE, 111. 60439, U.S.A. 

 a Radiation effects on developing circulatory system. 

 STEDING, G. Dr.med. — Anat. Inst, der Univ., Kreuzbergring 36, GOTTINGEN, Deutsche 



Bundesrepublik 

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

 h Selbstdifferenzierung der Somiten. Callus gallus (Aves) 

 c Friihentwicklung. Callus gallus (Aves) 

 d Strukturentwicklung des Uterus. Homo sapiens (Primates) 

 e Experimente zur Entwicklung der Extremitaten. (Aves) 

 f Experimentelle Analyse der Epitheldifferenzierung. Callus gallus (Aves) 

 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 



• STEFANELLI, A. Dr., Prof .ord. — 1st. di Anat. Comp. "Battista Grassi", Fac. di Sci., 



Univ. di Roma, Via A. Borelli 50, ROMA, Italia 

 a Nervous microsystems in vitro. Callus domesticus (Aves) 

 STEGNER, H.-E. Dr.med. — Universitats-Frauenklinik, Martinistr. 52, 2-HAMBURG 20, 



Deutsche Bundesrepublik 

 a Histotopochemische und elektronenmikroskopische Untersuchungen an Oozyten verschie- 



dener Reife. Homo sapiens (Primates) 

 h Organogenese des weiblichen Genitaltraktes: histotopochemische und elektronenmikrosko- 

 pische Untersuchungen. Homo sapiens (Primates) 

 STEIN, Miss K. F. Ph.D.. Prof. — Dept. of Biol. Sci., Clapp Lab., Mount Holyoke Coll., 



SOUTH HADLEY, Mass. 01075, U.S.A. 

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

 b Development of inherited anomalies, e.g. eyes open at birth, circling behaviour. (Rodentia) 

 STEINBERG, M. S. Ph.D., Prof. — Dept. of Biol., Princeton Univ.. PRINCETON, N.J. 



08540, U.S.A. 

 a Direct measurement of strengths of intercellular adhesions among embryonic cells. Callus 



domesticus (Aves) 

 b Mechanisms in cell aggregation and tissue reconstruction. (Porifera), Rana pipiens (Anura), 



Callus domesticus (Aves) 

 c Physics and chemistry of cell surfaces in relation to cell adhesion (titration of charged 



groups at cell surfaces by microelectrophoresis of living cells; identification of chemical 



groups at cell surfaces; effects of enzymes upon intercellular adhesion). (Porifera), Gallus 



domesticus (Aves) 

 d Mechanisms governing "contact inhibition" of mitosis and of cell movement (various 



tissue culture cell strains), 

 e Mechanisms of nerve-end organ integration (studies of reflex behavior after regeneration 



of sensory nerves into a topographically rearranged integumental field). Rana pipiens 



(Anura) 



143 



