d Cooperation between different subcellular components in morphogenesis. (Algae) 

 SCHWOCHAU, M. E. Dr.rer.nat., Prof. - Inst, fur Allgem. Biol., Univ. Dusseldorf, Ulenberg- 



str. 127-129, 4000 DUSSELDORF, B.R.D. (Germany) 

 a Molecular biology and genetics of the Y-chromosome. Drosophila spp. (Diptera) 

 SCISHAWSKI, A. M.D. - Dept. of Biol, and Embryol., Acad, of Med., ul. Kopernika 7, KRAK6W, 



Poland 

 SCONZO, Miss G. - 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy 

 a RNA synthesis in early development. Paracentrotus lividus (Echinoidea) 

 b Giant RNA in the cytoplasm of embryos. Same species as a 

 SCRIBA, M. E. L. Ph.D., Prof. - Inst, fur Zool., Rhein.-Westf.-Techn. Hochschule, Birkenweg 16, 51 



AACHEN, B.R.D. (Germany) 

 a Developmental abnormalities caused by lethal factors. Drosophila melanogaster (Diptera) 

 SEDtACEK, J. M.D., Ph.D. - Res. Lab. of Psychiat., Charles Univ., Albertov 5, 12800 PRAHA 2, 



Czechoslovakia 

 a Development of spontaneous and evoked phasic activity of the central nervous system in the 



prenatal period. (Aves; Mammalia) 

 b Embryonic brain development: tissue compartmentation; cerebrospinal fluid; membrane ATPase 



system. (Aves; Mammalia) 

 SEHNAL, F. RNDr., CSc. - Dept. of Physiol., Inst, of Entomol., Czech. Acad, of Sci., Na Folimance 



5, 12000 PRAHA 2, Czechoslovakia 

 a Comparative study of periods of sensitivity to hormonal analogues during gametogenesis and 



embryogenesis. Galleria mellonella, Celerio euphorbiae, Mamestra brassicae, Spodoptera litoralis 



(Lepidoptera), Leptinotarsa decemlineata, Hylobius abietis, Coccinella septempunctata (Coleop- 



tera), Syrphus corollae, Ceratitis capitata (Diptera) 

 b Hormonal control of metamorphosis - action of hormones on the cell cycle in target tissues, 



relationship between the action of juvenile hormone and ecdysone and nucleic acid synthesis. 



Galleria mellonella (Lepidoptera), Tenebrio molitor (Coleoptera) 

 SEICHERT, V. MUDr. - Dept. of Anat., Charles Univ., U nemocnice 3, 12800 PRAHA 2, 



Czechoslovakia 

 a Experimental analysis of limb formation. Gallus domesticus (Aves) 

 SEIDEL, F. Dr.phil., Prof. (Emer.) - Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/Lahn, 



W.Germany ISDB 



SEIDL, W. E. Dr.med. - Embryol. Abt., Anat. Inst, der Univ., Kreuzbergring 36, 34 GOTTINGEN, 



B.R.D. (Germany) 

 a Experimentelle Analyse der Differenzierung des Mesenchym: Entstehung der Vascularisation. 



Gallus gallus (Aves) 

 SEITZ, K. A. Dr.rer.nat. - Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/Lahn, W.Germany 

 SEKERIS, C. E. Ph.D., Prof. - Physiol.-Chem. Inst., Med. School, Univ. Marburg, 355 MARBURG- 



Lahnberge, B.R.D. (Germany) 

 a Protein and RNA synthesis during metamorphosis; correlation with hormonal (ecdysone) 



secretion. Calliphora erytrocephala (Diptera) 

 b Mode of action of juvenile hormone. Periplaneta americana (Blattariae), Calliphora erythro- 



cephala (Diptera) 

 c Transcription of chromatin from epidermis by insect DNA-dependent RNA polymerases. 



Calliphora erythrocephala (Diptera) 

 d Translation of m-RNA in an homologous in vitro system from Calliphora erythrocephala 



(Diptera) 

 SELLER, Miss M. J. Ph.D. - Paediat. Research Unit, Guy's Hosp. Med. School, LONDON SE1 9RT, 



England 

 a Haematology of congenital anaemia in the W-series mutants. Mus musculus (Rodentia) 

 b Experimental teratology. (Mammalia) 



c Experimental production of chimaeras by tissue transplantation. Same species as a 

 d Transplantation of liver to ectopic sites in newborns and adults. Mus musculus, Rattus spp. 



(Rodentia) 

 e Alpha-fetoproteins. Homo sapiens (Primates) 

 SELMAN, G. G. Ph.D. - Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH 



EH9 3JN, Scotland, U.K. ISDB 



a Ultrastructural and experimental study of cleavage. Triturus alpestris (Urodela), Xenopus laevis 



(Anura) 

 b Role of microfilaments in morphogenesis of embryos. Triturus alpestris (Urodela), Xenopus laevis 



(Anura) (with M. M. PERRY) 

 c Morphology and lobe formation during the growth of hemicells. Micrasterias spp. (Desmidiaceae) 

 SEMBRAT, K. Ph.D., D.Sc, Prof. - Inst, of Zool., Univ. of Wroclaw, ul. Sienkiewicza 21, 50-335 



WROCLAW, Poland ISDB 



a Cytology and cytochemistry of partial metamorphosis. Triturus spec. (Urodela) 

 b Cytology and cytochemistry of gametogenesis. Embletonia pallida (Opisthobranchia, Gastro- 

 poda) 

 SENGEL, Ph. Dr.es Sci., Prof. - Lab. de Zool., Dept. de Biol., Univ. Sci. et Med. de Grenoble, 



B.P. 53, 38041 GRENOBLE, France ISDB 



a Mechanisms of feather pattern development. Gallus domesticus (Aves) 

 b Ultrastructure of skin development and feather keratins. Gallus domesticus (Aves) 

 c Role of axial organs in limb and skin development. Gallus domesticus, Coturnix c. japonica, Anas 



boschas (Aves) 

 d Programmed cell death and phagocytosis in foot morphogenesis. Gallus domesticus (Aves) 



89 



