ZILLES, K. J.; Dr.med. - Anat. Inst, der Univ., Med. Fak., Olshausenstr. 40-60, 2300 KIEL, B.R.D. 



(Germany) 

 a Role of spontaneous nerve cell death in the brain; influence of hormones on bram growth (mor- 

 phometry). Gallus domesticus (Aves), Rattus norvegicus (Rodentia), Homo sapiens (Primates) 

 b Cell degeneration in the visual system of blind and other strains (quantitative morphology). 



Astyanax mexicanus (Teleostei) ^ ^ 



ZIMA, J.; RNDr. - Dept. of Morphol., Inst, of Vertebr. Zool., Czechosl. Acad, of Sci., Kvetna 8, 



60365 BRNO, Czechoslovakia 

 a Comparative karyological studies. (Microchiroptera, Chiroptera) 

 ZISSLER, D.; Dr.rer.nat. - Biol. Inst. I (Zool.) der Univ., Alberstr. 21a, 78 FREIBRUG, B.R.D. 



(Germany) 

 a Ultrastructure of eggs and embryos. Smittia spec. (Chironomidae, Diptera) and other spp. (Insecta) 

 b Ultrastructure of spermatogenesis. (Animalia) 

 IrVKOVI^, Ms. N.; B.C. - Lab. of Molec. Biol, and Endocrinol., Inst, of Nucl. Sci. "Boris Kidric ', 



P.O.BOX 522, 11001 BEOGRAD, Yugoslavia 

 a Non-mendelian inheritance of precocious vagina opening, obtained by X-irradiation of the 



6-day embryo. Rattus norvegicus (Rodentia) 

 b Recovery of all types of blood cells in anemic animals, obtained by parabiotic union vi^ith normal 



animals. Same species as a 

 c Inheritable hypotrichosis, a recessive syndrom affecting skin, nervous and connective tissue. 



Same species as a ^,r.rvn 



ZNIDARIC (CORiC), Ms. D.; Dr.biol. - Dept. of Zool., Univ. of Zagreb, Rooseveltov trg 6, 41000 



ZAGREB, Yugoslavia 

 a Elimination of zymogen cells and their derivatives by antimite, a cytostatic agent. Pehnatohydra 



oligactis (Hydrozoa) (with A. LUI) 

 b Immunological reaction and changes in differentiation and morphogenesis in xenografts. Hydra 



pirardi, H. pseudoligactis (Hydrozoa) (with A. LUI) 

 ZOELEN, E. J. J. van; Ph.D. - Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 8, 3584 CT 



UTRECHT, Netherlands , . 



a Regulation of the cell cycle and its significance for development and differentiation: the role of 



changes in membrane properties and structure, ion and cyclic nucleotide metabolism. Neuro- 

 blastoma ceUs, Mus musculus (Rodentia) (with S. W. de LAAT, P. T. v.d. SAAG, J. BOONSTRA, 



W. H. MOOLENAAR, C. L. MUMMERY and S. A. NELEMANS) 

 ZONNEVELD, B. J. M.; Dr. - Genet. Lab., State Univ., Kaiserstr. 63, 2311 GP LEIDEN, Netherlands 

 a Developmental genetics of the fruiting bodies. Aspergillus nidulans (Ascomycetes) 

 ZOTIN A I ; Dr.Biol., Prof. - Lab. of Devi. Biophys., Inst, of Devi. Biol., Acad, of Sci. of the USSR, 



Vavilov St. 26, MOSCOW 117334, U.S.S.R. 

 ZUBOVA Ms. S. E.; Cand.biol.sci. - Lab. of Exp. Ichthyol., Biol. Inst., Leningrad State Univ., Stary 



Peterhof, LENINGRAD 198904, U.S.S.R. 

 a Effect of X-irradiation on gametogenesis. (Chondrostei; Teleostei) 

 ZUBRZYCKA, Ms. E.; Ph.D. - Nencki Inst, of Exp. Biol., 3 Pasteur St., 02-093 WARSZAWA, 



Poland 

 a Biogenesis of sarcoplasmic reticulum in skeletal muscle during ontogenesis and in tissue culture 

 ZOCCATOSTA, A.; Dr. - 1st. e Lab. Antropol., Univ. di Camerino, Via Filippo Camerini 5, 62032 



CAMERINO, Italy 

 ZUSMAN I N • Cand.biol.sci. - A. N. Severtzov Inst, of Evol. Morphol. and Ecol. of Animals, Acad. 



ofSc'i. of the USSR, Lenin Ave. 33, MOSCOW 117071, U.S.S.R. 

 ZUST, Ms. B.; Ph J). - Lab. of Cell Differ., Dept. of Biol., Univ. of Geneve, 154 Rte de Malagnou, 



1224 CHENE-BOUGERIES (Geneve), Switzerland 

 a Gene regulation and determination. Drosophila melanogaster (Diptera) 



122 



