SOLTYlQSKA, Ms. M.; Ph.D. - Dept. of Cytol., Zool. Inst., Warsaw Univ., KrakJrzedmiescie 26/28, 



00-927/l'wARSZAWA, Poland 

 a Cell differentiation in development. (Trematoda) 

 b Ultrastructure of preimplantation blastocyst; differentiation of trophoblast cells. Mus musculus 



(Rodentia) 

 SOYEZ, D.; D.E.A. - Lab. Sex. et Reprod. des Invertebr., Univ. Paris VI (P. et M. Curie), Bat.A, 



7e etage, 4 place Jussieu, 75230 PARIS Cedex 05, France 

 SPIELMANN, H.; Dr.med. - Inst, fiir Toxikol. und Embryonalpharmakol., Freie Univ. Berlin, Gary- 



strasse 1-9, 1000 BERLIN 33, B.R.D. (Gemiany) 

 a Teratogenic effects of cyproterone acetate and medroxyprogesterone acetate applied before 



implantation (especially: cleft palate, extended renal pelvis). Mus musculus (Rodentia) 

 b Higher sensitivity in vivo to cyclophosphamide of inner ceU mass compared to trophoblast of 



the blastocyst before implantation. Same species as a 

 SPINELLI, G.; Prof. - 1st. di Anat.Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy 

 a Regulation of transcription of histone genes at different stages of development. Paracentrotus 



hvidus (Echinoidea) 

 SPORNITZ, U. M. - Anat. Inst, der Univ., Pestalozzistr. 20, 4056 BASEL, Switzerland 

 a Oogenesis and early degeneration of eggs. (Amphibia) 

 b Development of liver and hepatic lymphoid tissue. Xenopus laevis (Anura) 

 SPREY, Th£.; Dr. - Zool. Lab., Unit of Cell Biol, and Morphogen., State Univ., Kaiserstr. 63, Postbus 



9516, 2300 RA LEIDEN, Netherlands 

 a Differentiation and development of imaginal discs: 1. pattern formation; 2. enzyme histochemistry 



(aldehyde oxidase); 3. model study. Drosophila melanogaster, Calliphora erythrocephala (Diptera) 

 SREBRO, Z.; M.D., Ph.D., Prof. - Dept. of Biol, and Embryol., Acad, of Med., ul.Kopernika 7, 



31-034 KRAKOW, Poland 

 a Neurohormonal control of regeneration. Triturus vulgaris, T. alpestris (Urodela) 

 STABELLINI, G. - Inst, of Histol. and Gen.Embryol., Univ. of Ferrara, Via Fossato di Mortara 64, 



44100 FERRARA, Italy 

 a Epitlielio-mesenchymal interactions in lung and skin morphogenesis in vitro. Gallus domesticus 



(Aves) 

 STAGNI, Ms. A.; Dr., Prof. - Inst, of Zool., Univ. of Bologna, Via S.Giacomo 9, 40126 BOLOGNA, 



Italy 

 a Sex determination and sex differentiation. Chlorohydra vtridissima (Hydrozoa) 

 b Cytochemistry and electron microscopy of oogenesis and spermatogenesis. Same species as a 

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



(Anura) 

 d Gonadogenesis. Streptopelia risoria (Aves) 

 STANFORD, E.; B.Sc. - Mill Hill Labs., Imp. Cane. Res. Fund, Burtonhole Lane, LONDON NW7 



IAD, England 

 a Pattern formation. Dictyostelium discoideum (Acrasiales) 

 STANCE, Ms. L.; Drjer.nat., Prof. - Arbgr. Pflanzenphysiol., Univ. Kassel, Heinrich-Plett Str. 40. 



Postfach 101380, 3500 KASSEL, B.R.D. (Germany) 

 a Meristem activity and structure; influence of growth substances on meristem differentiation. 



Riella spec. (Hepaticae) 

 b Differentiation in a system of two isolated dedifferentiating ceUs. Same species as a 

 STANISSTREET, M.; Ph.D. - Dept. of Zool., Univ. of Liverpool, Brownlow St., P.O.Box 147, 



LIVERPOOL L69 3BX, England 

 a Biochemistry and morphology of abnormal and normal early development (Lithium, electro- 

 phoresis, cell aggregation, protein synthesis, electron microscopy). Xenopus laevis (Anura) 

 STARCK, J.; Dr.spe'c. - De'pt. de Biol. Gen. et Appl., Univ. de Lyon 1,43 Bd.du 11 Novembre 1918, 



69621 VILLEURBANNE, France 

 a RNA synthesis during oogenesis (autoradiography, biochemistry). Caenorhabditis elegans 



(Nematoda) 

 STARK, E.; Prof. - Pathophysiol. Dept., Inst, of Exp. Med., Hung. Acad, of Sci., Szigony u. 43, 



BUDAPEST VIII, Hungary 

 a Morphological and functional developmentof endocrine organs, especially hypophysis and steroid- 

 producing glands. Felis domestica (Carnivora), Homo sapiens (Primates) 

 b Possible influence of the hypothalamus on development of morphophysiology of the hypophysis. 



Same species as a 

 c Functional development of CRF (corticotropin releasing factor) - ACTH (adrenocorticotropin) 



axis in the fetus. Rattus norvegicus (Rodentia), Homo sapiens (Primates) 

 d Development of corticotropin responsiveness of embryonic hypophysis studied in vitro 

 STAROSTIN, V. I., Cand.biol.sci. - N.K.Koltzov Inst, of Devi. Biol., USSR Acad, of Sci., 26 Vavilov 



St., MOSCOW 1 17334, U.S.S.R. 

 a Differentiation of haemopoietic and connective tissue cells. Mus musculus, Rattus norvegicus, 



Mesocricetus auratus (Rodentia) 

 STARRE, H. van der; Drs.biol. - Dept. of Anat. and Embryol., State Univ. of Utrecht, Janskerkhof 3A, 



35 12 BK UTRECHT, Netherlands 

 a Eye lens induction in vitro studied in chimaeric cultures. Gallus domesticus, Cotumix c. japonica. 



Anas platyrhynchos (Aves) 

 b Histochemistry and immunology of eye lens inductors. Gallus domesticus (Aves) 

 c Biosynthesis of soluble lens crystallin antigens before and after hatching (isoelectric focusing, 



autoradiography). Same species as b 

 d Synthesis of soluble proteins in the whole embryo and in the cultured eye cup (disc electrophoresis, 



isoelectric focusing, autoradiography). Same species as b (witli P. Th. JANSSEN) 



