by cell injection combined with immunofluorescence for gamma crystallin. Notophthalmus 



viridescens (Urodela) (with S. P. MODAK) 

 b Ultrastructural cytochemistry of cell surface alterations associated with dedifferentiation and 



redifferentiation of iris epithelial cells. Same species as a 

 c Cell cycle in conversion of iris epithelium cell type in culture. Same species as a 

 d Control of cell type by micro-injection of non-histone nuclear proteins into dedifferentiated iris 



epithelial cells in culture. Same species as a 

 YAZYKOV, A. A.; Cand.sci. - Chair of Embryol., Biol. Fac, Moscow State Univ., Lenin Hills, 



MOSCOW 11 7234, U.S.S.R. 

 a Experimental embryology in vitro. Mus musculus (Rodentia) 

 YOUNG, B. A.; M.D., Ph.D. - Dept. of Anat., Med. Biol. Ctr., Queen's Univ., BELFAST BT9 7BL, 



N.Ireland,U.K. 

 a Electron microscopy of developing thyroid and pituitary. Cervus spec. (Artiodactyla), Cavia 



porcellus (Rodentia), Oryctolagus cuniculus (Lagomorpha) 

 b Organ culture of the pituitary. Rattus spec. (Rodentia), Oryctolagus cuniculus (Lagomorpha) 

 YUROWITZKY, Y. G.; D.Sc. - N. K. Koltzov Inst, of DevL Biol., USSR Acad, of Sci., 26 Vavilov 



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

 a Biochemistry of differentiation. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) 

 ZAAYER, Ms. J. J. P.; Ph.D. - Lab. for Cell Biol, and Histol., State Univ., c/o Acad. Hosp., Rijns- 



burgerweg 10, 2333 AA LEIDEN, Netherlands 

 a Hormonal activity of fetal gonads and adrenal glands with regard to the development of the 



reproductive tract (organ culture). Cavia porcellus (Rodentia), Homo sapiens (Primates) 

 ZABORSKI, P. - Lab. d'Embryol. Exp., Ctr. de Rech. du CNRS, 67 rue Maurice Gunsbourg, 94200 



IVRY-sur-SEINE, France 

 a Cytogenetique et immunologie de la differenciation sexuelle des gonades. Pelodytes punctatus 



(Anura), Pleurodeles waltl (Urodela) 

 ZACCANTI, F.; Dr., Prof. - Inst, of Zool., Univ. of Bologna, Via S. Giacomo 9, 40126 BOLOGNA, 



Italy 

 a Hormone regulation of ovarian and Bidder's organ oogenesis. Bufo bufo (Anura) 

 b Effect of steroids on sex differentiation (autoradiography). Rana dabnatina, R. latastei, 



R. esculenta, Bufo bufo (Anura) 

 c Neuroendocrine regulation of agamic reproduction. Dugesia gonocephala, D. tigrina (Turbellaria) 

 ZACCHEI, Ms. A. M. - 1st. di Anat. Comp., Univ. di Roma, Via A. Borelli 50, 00161 ROMA, Italy 

 a Retinal and neural structures in vitro. Gallus domesticus (Aves), Mus musculus (Rodentia) 

 b In vitro studies of relations between nervous and muscle cells 

 ZACCONE, G.; Dr., Prof. - Inst, of Zool. and Comp. Anat., Univ. of Messina, Via del Verdi 75, 



98100 MESSINA, Italy 

 a Histochemical distribution of the enzymes of carbohydrate metabolism in the Golgi zones of 



yolk globules. Aplysia depilans (Gastropoda) 

 b Histochemical characterization of alkaline phosphatase, acid phosphatase and thiamine pyro- 

 phosphatase (TPP-ase) activities in relation to protein synthesis in the yolk. Murex brandaris 



(Gastropoda) 

 ZAHLAVA, J.; MUDr., CSc. - Inst, of Pathophysiol., Charles Univ., Lidicka 1, 306 05 PLZEN, 



Czechoslovakia 

 a Developmental changes in the connections between medial geniculate body and homo- or con- 

 tralateral cortical auditory areas in the gyrus ectosylvius anterior and medius. Canis familiaris 



(Carnivora) 

 b The different influences of GABA (7-aminobutyric acid) and some convulsants on the cortical 



auditory responses evoked by acoustic or by electrical stimulation of subcortical structures 



during postnatal development. Same species as a 

 ZAITZEV, A. v.; Cand.biol.sci. - A. N. Severtzov Inst, of Evol. Morphol. and Ecol. of Animals, 



Acad, of Sci. of the USSR, Lenin Ave.33, MOSCOW 117071, U.S.S.R. 

 ZANTINGE, A.; Drs. - Dept. of Developm. Plant. Biol., State Univ. of Groningen, Biol. Ctr., Kerk- 



laan 30, 9751 NN HAREN (Gr.), Netherlands 

 a Genome activity during development. Schizophyllum commune (Basidiomycetes, Fungi) 

 ZEILMAKER, G. H.;Ph.D. - Dept. of Endocrinol., Growth, and Reprod., Erasmus Univ., P.O.B. 1738, 



3000 DR ROTTERDAM, Netherlands 

 a Egg transplantation. Mus musculus (Rodentia) 



b Development of ectopic trophoblast. Rattus norvegicus, Mus musculus (Rodentia) 

 c Energy requirements and fertility of matured oocyte. Same species as a 

 d Deep-frozen preservation of embryos and subsequent development. Same species as a 

 e Maturation and fertilization of oocytes in vitro. Homo sapiens (Primates) 

 ZENZES, Ms. M. T.; Dr. - Inst, fur Humangenet. und Anthropol. der Univ., Alberstr. 11, 7800 



FREIBURG, B.R.D. (Germany) 

 a Sex determination and differentiation. (Vertebrata) 

 ZERBIB, C. - 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 

 ZILCH, R. - Inst, fur Zool., Lehrst. I,Univ.Erlangen-Nurnberg,Universitatsstr. 19, 8520ERLANGEN, 



B.R.D. (Germany) 

 a Comparative embryology. DiastyUs rathkei (Cumacea),Penaeustrisulcatus, Atyaephyra desmaresti 



(Decapoda) and other Malacostraca (Crustacea) 

 ZILLER (SENGEL), Ms. C; D.Sc. - Inst. d'Embryol. du C.N.R.S. et du Coll. de France, 49bis av. de 



la BeUe GabrieUe, 94130 NOGENT-sur-MARNE, France 

 a Development of neural crest cells (cell and tissue culture). Gallus gallus, Coturnix c. japonica 



(Aves) 



121 



