b Cytology and cytochemistry of gametogenesis, fertilization, and cleavage. Arbacia 



punctulata, Echinarachnius parma, Lytechinus pictus (Echinoidea), Mus musculus (Ro- 



dentia) 

 SKINNER, D. M. Ph.D., Prof. — Biol. Div., Oak Ridge Natl. Lab., P.O.Box Y, OAK 



RIDGE, Tenn. 37830, U.S.A. • 



a Metabolism of nucleic acids in the molt cycle. Gecarcinus lateralis (Decapoda, Crustacea) 

 b Functions of satellite DNA's and macromolecular metabolism in regenerating tissues. Same 



species as a (with D. E. GRAHAM) 

 SKOOG F. Ph.D., Prof. — Inst, of Plant Developm., and Dept. of Bot, Univ. of Wisconsin, 



Birge Hall, MADISON, Wis. 53706, U.S.A. • 



SKREB, N. M.D., D.Sc, Prof. — Inst, of Biol., Univ. of Zagreb, Salata 3, 41001 ZAGREB. 



Yugoslavia * 



a Early differentiation; transplantation, in vitro culture, autoradiography. Rattus 



norvegicus (Rodentia) (with B. LEVAK (5VAJGER) and A. SVAJGER) 

 b Analysis of soluble proteins in organogenesis. Same species as a (with D. SERMAN) 

 c Differentiation of early postimplantation stages under the kidney capsule, teratocarcino- 



genesis, nature of embryonal carcinoma cells; transplantation, electron microscopy. Mus 



musculus (Rodentia) (with D. SOLTER and I. DAMJANOV) 

 SLAB?, O. D.Sc, Prof. — Inst, of Histol. and Embryol., Charles Univ., Karlovarska 48, 



PLZEft, Czechoslovakia • 



— temporarily: Cite Jean de la Fontaine, La Tour, ORAN, Algeria 

 SLACK, Mrs. C. Dr.Sc, Ph.D. — Dept. of Physiol., Royal Free Hosp. Med. School, LON- 

 DON W.l, England 

 a Permeability of cell surface and junctional membranes of pregastrular stages in vivo 



and in vitro (electrophysiology) . Xenopus laevis (Anura), Ambystoma mexicanum 



(Urodela) tt , r „ _ 



SLADECEK, F. RNDr., DSc, Prof. — Dept. of Exper. Zool., Charles Univ., Vinicna 7, 



PR AH A 2, Czechoslovakia 

 a Transplantation of nuclei in relation to the development of antigenic characteristics. 



(Amphibia) (with A. ROMANOVSKY) ™w«wiri 



b Transplantation of nuclei in relation to nucleic acids. (Amphibia) (with J. NEDVlDEK) 

 c Number of cell generations in relation to cell determination. (Amphibia) 

 SLAVKIN H. C. D.D.S. — Dept. of Biochem., Univ. of S.California, School of Dent., 



University Park, LOS ANGELES, Calif. 90007, U.S.A. 

 a Role of intercellular membrane limited vesicles, partly containing methylated RNAs, in 



epithelial-mesenchymal interactions in tooth formation; characterization of "histocompati- 

 bility antigens" of these vesicles and consequences of "infecting" primary homotypic cell 



cultures with these profiles. Oryctolagus cuniculus (Lagomorpha) 

 b Search for macromolecular assembly mechanisms controlling specificity of enamel, dentine, 



and cementum (electron microscopy, biochemical methods, immunochemistry, isotope 



tracing). Oryctolagus cuniculus (Lagomorpha) 

 SLIPKA, J. Dr.Med., Dr.rer.nat., C.Sc. — Inst, of Histol. and Embryol., Charles Univ., 



Karlovarska, PLZE55, Czechoslovakia 

 a The development and teratology of the branchial region. (Amniota, incl. Homo sapiens) 

 b The development of the bursa pharyngea from the standpoint of evolutionary morphology. 



Homo sapiens (Primates) 

 SMART, I. H. M. M.B., Ch.B. — Dept. of Anat, Univ. of Dundee, DUNDEE DD1 4HN, 



Scotland, U.K. 

 a Histogenesis of nerve cells and neuroglia. Mus musculus (Rodentia) 

 b Studies on the geometry of the egg. Various spp. (Aves) 

 SMIT, A. L. D.Sc, Prof. — Dept. of Zool., Univ. of Durban- Westville, Private Bag 4001, 



DURBAN, S.Africa 

 a The ontogenesis of the head skeleton and musculature. Dendroaspis angusticeps, D. 



polylepis (Ophidia) 

 SMITH, C. W. Ph.D., Prof. — Dept. of Bot., Univ. of Hawaii. Plant Sci. Bldg. Rm 101, 3190 



Maile Way, HONOLULU, Hawaii 96822, U.S.A. 

 a Factors controlling water uptake by dormant cysts, seeds, and spores. (Angiospermae) 

 b Presentation of water insoluble materials to dormant systems prior to germination and 



their consequent effect on growth and development. (Angiospermae) 

 SMITH, E. J. C. Ph.D. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la 



Belle Gabrielle, 94 NOGENT-sur-MARNE, France 

 a Growth factors necessary for the survival and growth of malignant tumours in organ 



culture. Gallus gallus (Aves) (with Et. WOLFF and Em. WOLFF) 

 b The effects of tumours on the growth of embryomas. Rattus rattus (Rodentia) (with J. 



SALAUN) 

 SMITH. G. M.D., Prof. — Sect, of Genet., Stritch School of Med., 2160 S. 1th Ave., 



MAYWOOD, 111. 60153, U.S.A. 

 a Developmental effect of cytochalasin B on lymphocytes. Homo sapiens (Primates) 

 b Teratogenetic action of cytochalasin B. Gallus domesticus (Aves) 



168 



