c Analysis of mechanisms of cytodifferentiation in cleaving eggs. Limnaea stagnalis (Gastro- 



poda) 



d Germinal localization in eggs. Dentalium spec. (Scaphopoda); Patella spec. (Gastropoda) 

 GENIS-GALVEZ, J. M. Med.Dr., Ph.D., Prof. — Dept. de Anat., Fac. de Med., Univ. 



de Granada, GRANADA, Spain 

 GEORGE. J. C. Ph.D., Prof. — Dept. of Zool., Univ. of Guelph. GUELPH, Ont., Canada 

 GEORGES, Miss D. Dr.spec. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 



GRENOBLE, France 

 a Development of the gonads: role of the neural complex and other factors in spermatogenesis 



and oogenesis. Ciona intesfinalis (Ascidiae) 

 b Development and cyclic changes in the neural gland; morphological, physiological and 



ultrastructural study. Ciona intestinalis (Ascidiae) 

 GEORGIEV. G. P. Dr. — Inst, of Molec. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 



32, MOSCOW V-312, U.S.S.R. • 



GfiRARD, H. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 



NANCY, France 

 GERARD, Miss M. J. Lie. et D.E.A. — Lab. de Biol. Gen.. Fac. des Sci., B.P. 347, 51 



REIMS, France 

 GERLINGER, P. Dr.en Med. — Inst. d'Embryol., Fac. de Med., 1 Place de I'Hopital, 



STRASBOURG, France 

 a Etude de la formation des constituants de I'oeuf 

 GERISCH, G. Dr.rer.nat. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 7% FREI- 

 BURG, W.Germany 

 a Chemotaxis, Induktionswirkung von Aggregationszentren. Dictyostelium minutum (Acra- 



siales) 

 b Zellkontaktbildung, Zelldifferenzierung, Entwicklungsdefekte bei Mutanten. Dictyostelium 



discoideum (Acrasiales) 

 GERKEN, Miss S. E. B.Sc. — Dept. de Zool., Inst, de Cienc. Biol, da U.F.M.G., Rua 



Carangola 288 - 4° andar, C.P. 253, BELO HORIZONTE, M.G., Brazil 

 GERNEKE, W. H. D.Sc. — Dept. of Anat., Fac. of Vet Sci., Univ. of Pretoria, P.O. 



ONDERSTEPOORT, South Africa 

 GERZELI, G. Prof. — 1st. di Anat. Comp., Univ. di Pavia, Piazza Botta 10, 27100 PAVIA, 



Italy 

 a Electron microscopical studies on the oocytes containing polyphenolic substances. Thy' 



sanozoon brocchii (Polycladidea. Turbellaria) 

 h Egg-shell formation and vitelhn cells (histochemical, histomorphological and biochemical). 



(Plathelminthes) 

 c Allantois and urinary bladder (histochemical and histomorphological). (Chelonia) 

 GEUSKENS, M. D.Sc.Zool. — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des 



Chevaux, RHODE-ST-GENESE, Brabant, Belgium 

 a Etude par microscopie electronique et autoradiographie a haute resolution, de I'influence 



des constituants cytoplasmiques sur la transcription des genes au cours du developpement 



embryonnaire. Xenopus laevis (Anura), Pleurodeles waltlii (Urodela). Ilyanassa obsoleta 



(Gastropoda) 

 GEYER (DUSZYl^SKA), Mrs. I. Dr. — Dept. of Anat., Cornell Univ., 1300 York Ave.. 



NEW YORK, N.Y. 10021, U.S.A. 

 GEZELIUS. N. G. B. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, 



Sweden 



a Studies with labelled precursors of the correlations between protein synthesis and morpho- 

 logical development and of the interactions between nucleus and cytoplasm. Paracentrotus 



lividus. Psammechinus miliaris (Echinoidea) 

 GHIRARDELLI, E. Prof. — 1st. di Zool. e Anat. Comp., Univ. di Trieste, Via Alfonso 



Valerio, 32 TRIESTE, Italy 

 a Germ cell differentiation. (Planariidae. Turbellaria) 



b Germ cell differentiation. (Bidder's organ differentiation). Bufo bufo (Anura) 

 c Germ cell determinant. Spadella cephaloptera (Chaetognatha) 

 GIANNETTI, A. M.D. — Dept. of Dermatol., School of Med., Univ. of Pavia, Polichnico 



S. Matteo, 27100 PAVIA, Italy 

 a Mucoproteins in fetal skin. Homo sapiens (Primates) 

 h Developmental changes of glycosaminoglycan content in fetal epidermis. Homo sapiens 



(Primates) 



GIBLEY, C. W., Jr. Ph.D. — Pennsylvania Coll. of Podiat. Med., 804 Pine St., PHILA- 

 DELPHIA, Pa. 19107, U.S.A. 

 a Histochemistry and fine structure of the developing excretory system. Rana pipiens (Anura), 



Gallus domesticus (Aves), Mus musculus (Rodentia) 

 h Histochemistry and electron microscopy of differentiating experimentally induced renal 



carcinomas. Mesocricetus auratus (Rodentia) 

 GIBSON, I. Ph.D. — School of Biol. Sci., Univ. of East Anglia, Wilberforce Rd., NOR- 

 WICH, NOR 88C. England 



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