WEBB, F. T. G.; Dr.phU. - Spec. Progr. of Res. in Hum. Reprod., World Health Org., 1211 GEN£VE 



27, Switzerland 

 WEBER, R.; Ph.D., Prof. - Div. of Cell and Devi. Biol., Zool. Inst., Univ. Bern, Sahlistr. 8, 3012 



BERN, Switzerland 

 a Hemoglobin transition in relation to metamorphosis. Xenopus laevis (Anura) (with H. HOSBACH 



andH.WIDMER) 

 b Regulatory mechanism of estrogen-dependent synthesis of vitellogenin. Same species as a (with 



G. U. RYFFEL, B. WESTLEY , R. JAGGI and B. FELBER) 

 WECHSLER, W.; Dr. med., Prof. Neuropathol. Inst, der Univ., Moorenstr. 5, 4000 DUSSELDORF, 



B.R.D. (Germany) 

 a Developmental neuropatliology and neurooncology. Rattus norvegicus, Mus musculus, Meso- 



cricetus auratus (Rodentia), Homo sapiens (Primates) 

 WEGMANN, R.; Dr.Med., D.Sc, Prof. - Inst. d'Histochim. Med., Univ. Paris V (Rene Descartes), 



45 rue des StsPeres, 75270 PARIS Cedex 06, France 



also Dept. d'Histoenzymol., Fac. Frangaise de Med. et Pharm., B.P. 5076, BEIRUT, Lebanon 

 a Enzymology and metabolic patliways of morphogenesis. (Mammalia) 

 b Development of the ovary. (Mammalia) 



c Bismuth and encephalopathy before and after birth. Rattus spec. (Rodentia) 

 WEGNEZ, M.; D.Sc. - Centre de Genet. Molec. du C.N.R.S., 91 190 GIF-sur-YVETTE, France 

 a Mecanismes biochimiques de I'oogenese. DrosophUa melanogaster (Diptera), Xenopus laevis 



(Anura) 

 WEIJER, C. J.; Drs. - Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 8, 3584 CT UTRECHT, 



Netherlands 

 a Role of cell-cell contact in cell differentiation and movement. Dictyostelium discoideum 



(Acrasiales) 

 WEISS, R. A.; Ph.D. - Imp. Cane. Res. Fund Labs., Lincoln's Inn Fields, LONDON WC2A 3PX, 



England 

 a Effect of retroviruses on cell differentiation. (Aves; Mammalia) 

 b Inherited viral genomes as models of gene expression. Gallus gallus and other spp. (Phasianidae, 



Aves) 

 WELLENSIEK, S. J.; Dr., Ir., Prof. - Dept. of Horticult., Agric. Univ., Haagsteeg 3, P.O.Box 30, 



6700 AA WAGENINGEN, Netherlands 

 a Effects of flower inducing factors (long day, vernalization, very high temperature, gibbereUic 



acid) on the blocking in vegetative plants of different genotypes. Silene armeria (Caryophyllaceae) 

 WELLMANN, E.; Dr.rer.nat. - Biol. Inst. Ilder Univ.,Lehrst. fur Bot., Schanzlestr. 1, 78 FREIBURG/ 



Br., B.R.D. (Germany) 

 a Light mediated differentiation in tissue cultures. (Umbelliferae) 

 WELSUM, R. A. van; M.D. - Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, 1092 AD 



AMSTERDAM-0., Netherlands 

 WENDER, M. B.; M.D., Prof. - Inst, of Neurol, and Sens. Organs, Med. Acad., 49 Przybyszewskiego 



St., 60-355 POZNA>J, Poland 

 a Chemical composition and enzyme activity of developing nervous tissue with special reference to 



the period of myeUnation. Laboratory animals. Homo sapiens (Mammalia) 

 b Wallerian degeneration in the immature optic nerve. Oryctolagus cuniculus (Lagomorpha) 

 c Influence of transplacental intoxication with ethylnitrosourea on chemistry of developing brain. 



Mus musculus (Rodentia) 

 WENIGER, J.-P.; Dr. - Lab. de Zool. et d'Embryol. Exp., Univ. Louis Pasteur, 12 rue de I'Universite, 



67000 STRASBOURG, France 

 a Chemical nature of the testicular hormone of the embryo; probably a protein. Gallus domesticus 



(Aves) 

 b Role of the hypophysis in hormonal activity of embryonic gonads. Gallus domesticus. Anas 



platyrhynchos (Aves), Mus musculus, Rattus spec. (Rodentia), Oryctolagus cuniculus (Lagomorpha) 

 c Onset of meiosis. Gallus domesticus (Aves), Mus musculus, Rattus spec. (Rodentia) 

 d Role of H - Y antigen in gonadal differentiation. Same species as c 

 WENSING, C. J. G.; D.V.M., Ph.D., Prof. - Vet. Anat. and Embryol. Inst., State Univ., Bekkerstraat 



141, 3572 SG UTRECHT, Netherlands 

 a Mechanism of testicular descent (histology , biochemistry, tissue culture). (Mammalia) 

 b Development of heart anomalies, especially hypoplasia of right and left heart. (Mammalia) 

 WENT, D. F.; Dr.sc.nat. - Dept. of EntomoL, Swiss Fed. Inst, of Technol., ETH-Zentrum, Clausiusstr. 



21, 8092 ZURICH, Switzerland 

 a Physiology of paedogenetic reproduction; sex determination; in vitro culture of ovaries; time- 

 lapse cinematography. Heteropeza pygmaea (Diptera) 

 b Morphogenesis and regulation in the meroistic ovary: establishment of egg architecture and its 



relation to embryonic development (autoradiography, electron microscopy, culture in vitro, time- 

 lapse cinematography). Same species as a 

 c Egg activation. Pimpla turionellae (Hymenoptera) 

 WESSELS, J. G. H.; Dr., Prof. - Dept. of Developm. Plant Biol., State Univ. of Groningen, BioLCtr., 



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

 a Biochemistry and ultrastructure of sexual morphogenesis, especially in relation to enzyme regula- 

 tion. Schizophyllum commune (Basidiomycetes, Fungi) 

 b Biochemistry and ultrastructute of hyphae, synthesis and degradation of wall constituents. Same 



species as a 

 WESTLEY, B.; Ph.D. - Div. of CeU and Devi. Biol., Zool. Inst., Univ. Bern, Sahlistr. 8, 3012 BERN, 



Switzerland 



117 



