a The organogenesis gradients in the spiracular section of the lateral sensory system. Huso huso 



(Chondrostei) 

 DREWS, U.; Dr.med., Prof. - Anat. Inst, der Univ., Vesaliusweg 2-4, 44 MUNSTER, B.R.D. 



(Germany) 

 a Expression of Tfm (testicular feminization) and Sxr (sex reversed) in the development of male 



sex organs (epithelio-mesenchymal recombination). Mus musculus (Rodentia) 

 b Cholinesterase activity in non-nervous embryonic tissues (histochemistry). Same species as a 

 DROIN, Ms. A.; Dr.biol. - Stat, de Zool. Exp., Univ. de Geneve, 154 route de Malagnou, 1224 



CHCNE-BOUGERIES, Switzerland 

 DRUGA, Ms. A.; M.D. - Res. Inst, for Pharm. Chem., P.O.Box 82, 1325 BUDAPEST, Hungary 

 a Teratogcnetic effect of chemicals, especially drugs containing the piperazin ring. Rattus 



norvegicus (Rodentia) 

 b Perphenazine induced micromelia (histology: topooptical reaction). Same species as a 

 c The effect of phenobarbital and SKF 525-A pretreatment on the teratogenicity of perphenazine, 



to study whether the unchanged perphenazine is teratogenic or not. Same species as a 

 DRUGA, R.; MUDr. - Dept.of Anat., Charles Univ., U nemocnice 3, 12800 PRAHA 2, Czechoslo- 

 vakia 

 a Prenatal morphological development of basal ganglia. Felis domestica (Carnivora), Rattus 



norvegicus (Rodentia), Oryctolagus cuniculus (Lagomorpha) 

 DRUKKER, J.; Ph.D. Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTER- 



DAM-0., Netherlands 

 a Descriptive and experimental studies of the developing central and peripheral nervous system. 



Gallus domesticus (Aves) 

 b Histochemical characteristics of developing chemoreceptor organs. Oryctolagus cuniculus 



(Lagomorpha), Mus musculus, Rattus norvegicus (Rodentia) 

 c Embryology of the endocrine cells of the pancreas. Same species as a 

 DiJBENDORFER, A.; Dr. phil.II - Zool.-Vergl. Anat. Inst., Univ. Zurich, Kunstlergasse 16, 8006 



ZURICH, Switzerland 

 a Determination and cell lineage in imaginal discs. Drosophila melanogaster (Diptera) 

 b Cell and tissue culture. Same species as a 

 DUBOIS, R.; Dr. - Inst. d'Embryol. du C.N.R.S. et du Coll. de France, 49bis av. de la Belle Gabrielle, 



94130 NOGENT-sur-MARNE, France 

 a Lignee germinale et morphogenese sexuelle. Gallus gallus (Aves) (avec D. CUMINGE) 

 b Biosynthese glycoproteique dans les ebauches gonadiques (topochimie, cinetique). Meme espece 



comme a 

 c Effets des lectines sur Tamiboidisme des cellules germinales. Meme espece comme a 

 d Aspects discontinus du renouvellement dans les systemes biologiques a cloisonnement 



anatomique complexe. Meme espece comme a 

 DUKE, E. J.; Ph.D. - Zool. Dept., Univ. Coll., Belfield, Stillorgan Rd., DUBLIN 4, Ireland 

 a Molecular basis of drug-sensitivity and resistance during development of inbred lines (especially 



5-fluorouracil, streptomycin, cytosine arabinoside). Drosophila melanogaster (Diptera) 

 b Genetic and epigenetic mechanisms governing the expression of aldehyde oxidase and xanthine 



dehydrogenase in developmental stages. Locusta migratoria (Orthoptera), Drosophila melano- 

 gaster (Diptera), Mus musculus (Rodentia) 

 c Carcinogenesis of embryonic cells cultured in vitro, induced by chemicals, viruses, irradiation and 



suitable subculturing. Mus musculus, Cricetulus griseus (Rodentia) 

 DUNCAN, C.J. ; Ph.D., Prof. - Dept. of Zool., Univ. of Liverpool, Brownlow St., P.O.Box 147, 



LIVERPOOL L69 3BX, England 

 a Factors affecting early differentiation (ionophore, calcium, electron microscopy). Xenopus laevis 



(Anura) 

 DUNCKER, H. R.; Dr.rer.nat., Dr.med., Prof. - Zentrum flir Anat. und Cytobiol., Justus Liebig Univ., 



Aulweg 123, 6300 GIESSEN, B.R.D. (Germany) 

 a Embryological and post-hatching development of the lung-air sac system, especially the number 



and arrangement of secondary bronchi and parabronchi, and the parabronchial blood-air capillary 



network. Columba spec, Gallus spec. Anas spec, Melopsittacus spec, Turdus spec, Passer spec, 



Taeniopygia spec, and others (Aves) 

 b Embryological development of celomic cavities and subdividing septa in correlation to develop- 

 ment of the lung-air sac system and of the intestinal and urogenital tract. Gallus spec. Anas spec, 



Columba spec and others (Aves) 

 DUNN, G. A.; Ph.D. - Strangeways Res. Lab., Worts Causeway, CAMBRIDGE CBl 4RN, England 

 a Cell relations in tissue culture. Gallus gallus (Aves), Mus musculus (Rodentia) (with M. 



ABERCROMBIE and J. P. HEATH) 

 DUPRAT (ESCUDlf.), Ms. A. M.; D.Sc - Lab. de Biol. Gen., Univ. Paul-Sabatier, 118 Rte de 



Narbonnc, 31077 TOULOUSE Ccdcx, France 

 a Determination and differentiation of cultured embryonic cells. (Urodela) 

 b Role of non-histonc chromatin proteins. (Urodela) 

 c Hemoglobin switch (immunofluorescence; in vitro culture). (Urodela) (with P. DEPARIS and M. 



FLAVIN) 

 DUPUIS (CERTAIN), Ms. P. - Lab. de Biol. Anim., Univ. Paris VI (P.et M. Curie), 4 place Jussieu, 



75230 PARIS Cedex 05, France 

 a Histociiemistry of steroid enzymes. Discoglossus spec (Anura), Pleurodeles spec. (Urodela) 

 DURAND, J. P.; D.Sc. - Lab. Souterrain, Centre Natl. Rech. Scient., 09410 MOULIS, France 

 a Reproduction and development of cave dwelling forms. (Teleostei; Urodela) 

 b Experiments on ontogenesis and eye degeneration 



32 



