a Production of limb deformities and growth retardation in the fetus with neuromuscular blocking 



agents. Rattus norvegicus (Rodentia) 

 b Role of the amniotic fluid a fetoprotein in the prenatal diagnosis of neural tube defects. Homo 



sapiens (Primates) 

 SICHARULIDZE, Ms. T. A.; Cand.biol.sci. - Dept. of Anim. Embryol., Inst, of Zool., Acad, of Sci. of 



the Georgian SSR, 31 Chavchavadze Ave., TBILISI 380030, U.S.S.R. 

 SIDOROVA, Ms. V. F. ; Dr. Biol. - Inst, of Human Morphol., Acad, of Med. Sci. of the USSR, Tsurupa 



St. 3, MOSCOW 117469, U.S.S.R. 

 a Growth and regeneration of the inner organs and their regulation. Oryctolagus cuniculus 



(Lagomorpha), Mus musculus, Rattus norvegicus, Mesocricetus auratus (Rodentia) 

 SIEBERS, A. M.; Drs. - Bot. Lab., State Univ., Nonnensteeg 3, LEIDEN, Netherlands 

 SIETSMA, J. H.: Dr. - Dept. of Developm. Plant Biol., State Univ. of Groningen, Biol. Ctr.. 



Kerklaan 30, HAREN (Gr.), Netherlands 

 a Composition of the cell wall (chemical analysis, enzymatic degradation) in relation to develop- 

 ment. Schizophyllum commune (Basidiomycetes, Fungi) 

 b Biochemistry of wall formation. Same species as a 

 SILVERS, J.; Dr.med. - Abt. Neuroanat., Anat. Inst, der Univ., Martinistr. 52, 2000 HAMBURG 20, 



B.R.D. (Germany) 

 a Ultrastructure of brain and retina development. Rattus spec. (Rodentia) 

 b Development of monoamine containing neurons. Same species as a 

 SIEWING, R.; o.Prof. - I. Zool. Inst, der Univ. Erlangen-Nurnberg, Universitatsstr. 19, 852 



ERLANGEN, B.R.D. (Germany) 

 a Development of body segmentation. (Brachiopoda, Phoronidea) 

 b Metamorphosis. Actinotrocha spec. (Phoronidea) • 



SIGNORET, J.; D.Sc, Prof. - Lab. d'EmbryoL, U.E.R. de Sci., Univ. de Caen, 14032 CAEN, France 

 a La cinetique cellulaire au cours de la segmentation; modalites, determinisme, signification. 



Ambystoma mexicanum (Urodela) 

 b Study of nuclear differentiation and specific activities by means of nuclear transplantation. Same 



species as a 

 SIMKISS, K.; Ph.D., Prof. - Dept. of Zool., Univ. of Reading, READING RG6 2AJ, England 

 a Calcium pumps in the chorioallantoic membrane and their role in transporting ions from eggshell 



to embryo. Gallus domesticus (Aves) 

 b Electrolyte movements from chorion and from allantoic fluid to blood. Same species as a 

 c Lysosomal activity in extra-embryonic membranes. Same species as a 

 SIMOLA, Ms. L. K.; Prof. - Dept. of Bot., Univ. of Helsinki, Unionkatu 44, 00170 HELSINKI 17, 



Finland 

 a Effect of light and plant hormones on development. Sphagnum fimbriatum, S. majus (Musci) 

 b Effect of heavy metals, arsenate and fluoride on growth and fine structure. Sphagnum 



nemoreum, S.fimbriatum (Musci) 

 SIMPSON, Ms. P.; B.Sc. (Hons.) - Centre de Genet. Molec, C.N.R.S., 91190 GIF-sur-YVETTE, 



France 

 a femperature-sensitive mutations blockmg clone development in imaginal discs, including t.s. cell 



lethals and mutations affecting the rate of cell division. Drosophila melanogaster (Diptera) 

 SINDEN, R. E.; Ph.D. - Dept. of Zool. and Appl. Entomol., Imperial Coll., Field Station, Silwood 



Park, ASCOT, Berks. SL5 7DE, England 

 a Cytology of gametogenesis and invasion mechanisms. Plasmodium spp. (Sporozoa) 

 SISTO DANEO, Ms. L. - Dept. of Human Anat., Univ. of Torino, Corso M.d'Azeglio 52, 10126 



TORINO, Italy 

 a Early neuro-muscular contacts "in vivo" and "in vitro". Gallus domesticus (Aves) 

 SKOBLINA, M. N. - Inst, of Developm. Biol., Acad, of Sci. of the USSR, Vavilov St. 26, MOSCOW 



117334, U.S.S.R. 

 a Effect of gonadotropins and changes in the germinal vesicle and in the oocyte cytoplasm during 



maturation. (Acipenseridae, Chondrostei; Amphibia) (with T. B. AISENSTADT) 

 b Role of karyoplasm in the formation of the mature egg properties. Acipenser steUatus (Chon- 

 drostei), Misgurnus fossilis (Teleostei), Rana temporaria, Bufo spec. (Anura) 

 c Mechanism of action of gonadotropic hormones. Same species as b 

 SkREB, N.; M.D., D.Sc, Prof. - Inst, of BioL, Fac. of Med., Univ. of Zagreb, Salata 3, P.O.Box 166, 



41001 ZAGREB, Yugoslavia 

 a Early differentiation; transplantation, in vitro culture. Rattus norvegicus (Rodentia) (with 



B. LEVAK, L. HOFMAN, V. CRNEK and A. SVAJGER (Inst, of Histol. and EmbryoL)) 

 b Analysis of soluble proteins in organogenesis, and of foetal proteins in differentiation. Same 



species as a (with D. SERMAN) 

 c Differentiation of early postimplantation stages under the kidney capsule, teratocarcinogenesis, 



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



norvegicus (Rodentia) (with V. CRNEK) 

 SLABY, O.- D.Sc, Prof. - Inst, of Histol. and Embryol., Charles Univ., Karlovarska 48, 30167 



PLZEN, Czechoslovakia 

 a Development of the nasal capsule from an evolutionary standpoint. ( Amnio ta, incl. Homo 



sapiens) 

 SLADECEK, F.; RNDr., D.Sc, Prof. - Dept. of Exp. Zool., Charles Univ., Vinicna 7, 12844 PRAHA 



2, Czechoslovakia 

 a Transplantation of nuclei in relation to nucleic acids and proteins. (Amphibia) (with 



J. NEDVfDEK and A. ROMANOVSKt) 



95 



