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) 

 STEINITZ, H. Ph.D., Prof. — Dept. of Zool., Hebrew Univ. of Jerusalem, JERUSALEM, 



Israel 

 STENGER (HAPPEN) , Mrs. K. E. Dr.es. Sci. — Inst. d'Embryol. et Teratol, exper. du 



C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, Prance 



— Lab. d'Embryol. exper. du Coll. de Prance, 11 Place M. Berthelot, PARIS Ve. 



Prance • 



a Recherches sur la differenciation et I'intersexualite in vitro et in vivo des gonades 



embryonnaires. (Aves) 

 b Biosynthese des hormones steroides sexuelles par les gonades embryonnaires. (Aves) 



(en collaboration avec Mrs. L. CEDARD) 

 STfiPHAN, P. Dr.es Sci., Prof. — Lab. de Zool., Fac. des Sci. de Nancy, 30 rue Ste 



Catherine, 54 NANCY, Prance 

 a Les malformations cardio-vasculaires: analyse causale de Taction teratogene de diverses 



substances, par ex. bleu trypan. Gallus gallus (Aves) 

 h Teratologic: origine, evolution et transmission des lesions, excroissances et duplications. 



Dugesia tigrina (Turbellaria) (en collaboration avec J. SCHILT) 

 c Developpement du systeme tracheen chez la larve (etude experimentale). Tipula flavo- 



lineata (Diptera) (en collaboration avec J. C. PIHAN) 

 STEPHAN (DUBOIS), Mrs. P. Dr.es Sci. — Lab. de Zool., Pac. des Sci. de Nancy, 30 rue 



Ste Catherine, 54 NANCY, France • 



a Migration et differenciation des cellules de regeneration. (Planaciidae; Oligochaeta micro- 



drila; Polychaefa errantia) 

 b Anomalies de la regeneration. (Planariidae; Olichaefa microdrila; Polychaefa errantia) 

 STEPHENSON, N. G. Ph.D. — School of Biol. Sci., Zool. Building, Univ. of Sydney. 



SYDNEY, N.S.W. 2006, Australia 

 a Culture of embryonic organs and tissue explants under pressure. (Vertebrata) 

 b Action of malignant mammalian cells on pre-adult amphibian cells: in vitro and in 



vivo. (Amphibia, Mammalia) 

 c Descriptive embryology. (Marsupialia) 

 STERBA, O. — Dept. of Morphol., Inst, of Vertebr. Zool., Czechoslov. Acad, of Sci., Kvetna 



8, BRNO, Czechoslovakia 

 a Prenatal development of muscles. (Marsupialia; Insectivora; Chiropfera; Rodentia; Artio- 



dactyla) 

 STERN, C. Ph.D., Prof. — Dept. of Zool.. Univ. of California, BERKELEY, Calif. 94720, 



U.S.A. 

 a Developmental genetics of pattern formation. Drosophila melanogasfer (Diptera) 

 h Pleiotropic effect of genes. Drosophila melanogasfer (Diptera) 

 STERN, H. Ph.D., Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109. 



LA JOLLA, Calif. 92037. U.S.A. • 



a Regulation of DNA synthesis during meiotic development. Trillium erectum, Lilium longi- 



florum, Tulipa gesneriana, Vicia faba, Bellevalia romana (Angiospermae) 

 h Developmental genetics. Marchantia polymorpha (Hepaticae) 



STERN, K. M.D., Prof. — Dept. of Pathol., Univ. of Illinois, 1853 W. Polk St., CHICA- 

 GO, 111. 60612. U.S.A. 

 a Relationship of reticulo-endothelial function to growth processes, as exemplified by liver 



regeneration after partial hepatectomy. Rattus spec, Mas musculus (Rodentia) 

 h Effect on organ growth of administration of isogeneic subcellular tissue fractions to 



weanlings of inbred strains. Mus musculus (Rodentia) 

 STERN, S. Ph.D. — Div. of Popul. Dynamics; School of Hyg. and Publ. Health, Johns 



Hopkins Univ., 615 N. Wolfe St., BALTIMORE, Md. 21205, U.S.A. 

 a Carbohydrate metabolism in pre-implantation embryos as related to glycogen metabolism; 



culture of embryos. Mus musculus (Rodentia), Homo sapiens (Primates) 

 h Composition of ovarian and tubal secretions. Mus musculus (Rodentia), Homo sapiens 



(Primates) 

 c Hormonal control of ovulation. Mus musculus (Rodentia) 

 d Ultrastructure of pre-implantation embryos. Mus musculus (Rodentia) 

 STETLER, D. A. Ph.D. — Dept. of Botany, Univ. of Minnesota, MINNEAPOLIS, Minn. 



55455. U.S.A. 

 a Effects of alkaloids and steroids on differentiation of tissue cultures. Papaver somniferum 



(Papaveraceae) 

 STEVEN, D. H. M.A., Vet.M.B. — Anat. School. Sub-Dept. of Vet. Anat., Univ. of 



Cambridge, Tennis Court Rd., CAMBRIDGE CB2 IQS, England 

 a Organization of placental blood vessels in relation to physiological exchange. Ovis aries 



(Artiodactyla), Equus caballus (Perissodactyla) 



166 



