TUFT, P. H. Ph.D. - Dept. of Zool., Univ. of Edinburgh, West Mains Rd., EDINBURGH EH9 3JT, 



Scotland, U.K. ISDB 



a Growth, density changes and water flows in pre-implantation blastocysts. Oryctolagus cuniculus 



(Lagomorpha) 

 TUMANISHVILI, G. D. Dr., Prof. - Dept. of Developm. Biol., Inst, of Exp. Morphol., Acad, of Sci. 



of the Georgian SSR, Digomi, 380059 TBILISI, U.S.S.R. 

 a Role of chemical intercellular interactions in regulation of the rate of cell multiplication and 



intracellular synthesis studied in cell cultures and in vivo. Gallus domesticus (Aves), Rattus 



norvegicus, Mus musculus (Rodentia) 

 b Participation of intracellular substances in gastrulation. Misgurnus fossilis (Teleostei) 

 c Participation of nuclear and cytoplasmic substances in control of state of DNA in chromatin. 



Gallus domesticus (Aves), Rattus norvegicus (Rodentia) 

 TURALA, K. Dr. - Inst, of Plant Cytol. and Embryol., Jagiellonian Univ., sw. Jana 20, 31-018 



KRAKOW, Poland 

 a Endopolyploidy during endosperm differentiation. Bryonia dioica, Cucurbita pepo (Cucurbita- 



ceae) 

 b Embryology of a seed sterile population. Ranunculus penicillatus (Ranunculaceae) 

 TURCHINI, J. P. D.M., D.Sc, Prof. - Lab. d'Histol.-Embryol., Fac. de Med., Bd. Winston Churchill, 



B.P. 38, 63 CLERMONT-FERRAND, France 

 TURNER, D. C. Ph.D. - Lab. for Developm. Biol., Swiss Fed. Inst, of Technol., Sonneggst. 5, 8006 



ZURICH, Switzerland 

 a In vitro myogenesis. Gallus domesticus (Aves), Rattus spec. (Rodentia) 

 TURNER, S. C. M.Sc. - Dept. of Biol. Sci., Portsmouth Polytechnic, Park Rd., PORTSMOUTH, 



England 

 a Endocrinology, Xenopus laevis (Anura) 

 TYSZKIEWICZ, Mrs. K. M.Sc. - Zool. Dept., Jagiellonian Univ., ul. Krupnicza 50, KRAKOW 2, 



Poland 

 a Embryogenesis of nervous system. Tetrodontophora bielanensis (Collembola) 

 UBBELS, Miss G. A. Ph.D. - Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 1, Universiteits- 



centrum 'De Uithof , UTRECHT, Netherlands 

 a Cytochemical heterogeneity of the egg, cleavage stages and early embryo. Ambystoma mexica- 



num, Xenopus laevis (Amphibia) 

 b Cytochemistry of the origin of dorso-ventral polarity of the egg: pigment movements during grey 



crescent formation and possible role of neurotransmitters. Xenopus laevis, Discoglossus pictus 



(Anura) (with P. D. NIEUWKOOP) 

 ULLMANN, Miss S. L. Ph.D. - Dept. of Zool., Univ. of Glasgow, GLASGOW G12 8QC, Scotland, 



U.K. ISDB 



a Superfoetation and polyovular follicles. Mus musculus (Rodentia) 

 b Ultrastructure of oogenesis. Tenebrio molitor (Coleoptera) 

 ULRICH, H. Dr.phil., Prof. - Dept. of Zool., Swiss Fed. Inst, of Technol., Universitatst. 2, 8006 



ZURICH, Switzerland 

 a Morphology, physiology, and cytology of paedogenetic-bisexual reproduction cycle. Heteropeza 



pygmaea (= Oligarces paradoxus) (Cecidomyiidae, Diptera) 

 URBANI, E. Prof. - 1st. di Istol. ed Embriol., Univ. di Roma, Citta Universitaria, 00185 ROMA, 



Italy ISDB 



URSPRUNG^ H. Ph.D., Prof. - Lab. for Developm. Biol., Swiss Fed. Inst, of Technol., Sonneggstr. 5, 



8006 ZURICH, Switzerland ISDB 



a Biochemistry of differentiation. Drosophila melanogaster (Diptera), Gallus domesticus (Aves), 



Mus musculus (Rodentia) 

 b Organization of imaginal discs. Drosophila melanogaster (Diptera) 

 VACEK, Z. MUDr., D.Sc, Prof. - Inst, of Embryol., Charles Univ., Albertov 4, 128 00 PRAHA 2, 



Czechoslovakia 

 a Electron microscopy and histochemistry of the placenta (comparative studies on the sub- 

 microscopic structure, enzyme histochemistry and transport mechanism). Homo sapiens (Prima- 

 tes), (Rodentia; Carnivora; Insectivora; Chiroptera) 

 b Role of primitive streak and tail region in early differentiation of the body (submicroscopic and 



cytochemical studies in normal and experimental conditions). Rana esculenta (Anura), Gallus 



domesticus (Aves), Mus rattus (Rodentia) 

 VAGNETTI, Mrs. D. Dr. - 1st. di Anat. Comp., Univ. di Perugia, Via A.Pascoli, 06100 PERUGIA, 



Italy 

 a Action of magnetic field on regeneration. Dugesia lugubris (Turbellaria) 

 VAHS, W. Dr.phil., Prof. - Zool. Inst, der Univ., Weyertal 119, 5 KOLN 41, B.R.D. (Germany) 

 a Quantitative cytochemistry of nucleic acids and proteins during induction and differentiation. 



Triturus vulgaris (Urodela) 

 b Phase specific gene activites in the eyecup-lens-system of the developing embryo, as revealed by 



quantitative cytochemical DNA determinations. Salmo irideus (Teleostei), Triturus vulgaris 



(Urodela) 

 c Ultrastructure of embryonic cells undergoing induction and differentiation. Same species as a 

 VAKAET, L. C. A. M.D., Prof. - Lab. of Anat. and Embryol., State Univ. Center, Groenenborger- 



laan 171, 2020 ANTWERPEN, Belgium ISDB 



a Early development. Gallus domesticus, Coturnix japonica (Aves) 

 b Fetal and neonatal endocrinology. Mus musculus albinus (Rodentia) 

 c In vitro culture of blastoderms, normal and after experimental interventions; histochemistry: 



enzymes and mucopolysaccharides. Coturnix japonica, Gallus domesticus (Aves) 



99 



