VERBICKY, M. Sh. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the 



U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. 

 a Immunological factors in the pathogenesis of haemolytic disease in newborns. Rattus 



noruegicus (Rodentia), Papio hamadryas (Primates) 

 b Immunologic mother-fetus relationships due to leucocyte and platelet antigens. Rattus 



noruegicus (Rodentia), Homo sapiens, Papio hamadryas, Macaca spec. (Primates) 

 VERDONK. N. H. Ph.D. — Zool. Lab.. State Univ. of Utrecht, Janskerkhof 3. UTRECHT, 



Netherlands 

 a Cell-lineage and head-pattern in normal and Li-treated embryos. Limnaea stagnalis 



(Gastropoda) 

 b Cell-lineage and head pattern in heat-shock treated embryos. Limnaea stagnalis (Gastro- 

 poda) 

 c Determination of bilateral symmetry in the head region. Limnaea stagnalis (Gastropoda) 

 d X-ray induced lethals. Limnaea stagnalis (Gastropoda) 

 VERDUN, D. F. Lic.es Sci. — Inst. Natl, de la Sante et de la Recherche Medicale, Unite 



de Physiol, placentaire, Hopital Saint-Antoine, 184 Rue du Faubourg St.-Antoine, PARIS 



Xlle, France 

 a Electron microscopy of the placental membrane. Rattus noruegicus, Mus musculus (Roden- 

 tia) 

 VEREISKAYA. Miss V. N. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the 



U.S.S.R., Vavilov St. 26, MOSCOW V-133, U.S.S.R. 

 a Cytology and cytogenetics of experimental polyploids in two species and in their hybrids: 



male meiosis and spermatogenesis; egg maturation; embryogenesis. Bombyx mori. B. 



mandarina (Lepidoptera) 

 h Induction of amphidiploidy in interspecific hybrids. Bombyx mod, B. mandarina 



Lepidoptera) (in collaboration with B. L. ASTAUROV) 

 VERHOFSTAD, A. A. J. Med.Drs. — Lab. of Anat. and Embryol., Med. Fac, Univ. of 



Nijmegen, Kapittelweg 40, NIJMEGEN, Netherlands 

 a Differentiation of epinephrine- and nor-epinephrine-containing cells in the adrenal medulla, 



studied by histochemical methods. Mus rattus (Rodentia) 

 VERNET, G. — Lab. de Biol, gener., Fac. des Sci., B.P. 347, 51 -REIMS, France 

 a Porphyrin synthesis (characterization and localization of porphyrins; enzymatic conversion 



of A-aminolevulinic acid into porphobilinogen in vivo and in vitro). Linens 



ruber (Anopla, Nemertini) 

 b Fine structure of photoreceptors. Lineus ruber (Anopla, Nemertini) 

 VERNET (CORNUBERT), Mrs. G. Dr.es Sci., Prof . — Lab. de Physiol, des Invertebres, 



Fac. des Sci., Place Bataillon, 34-MONTPELLIER, France 

 a Regeneration of nervous and neurosecretory cells of the eye stalk. Pachygrapsus marmora- 



tus (Decapoda, Crustacea) 

 b Sinus gland regeneration. Pachygrapsus marmoratus (Decapoda, Crustacea) 

 VERNON, G. A. Dr. — Dept. of Chemistry, Univ. Coll. London, Gower St., LONDON 



W.C.I, England 

 VERWOERD, C. D. A. Med.drs. — Div. of exper. Morphol., Dept. of Anat. and Embryol., 



Univ. of Amsterdam, Mauritskade 61, AMSTERDAM O., Netherlands 

 a Effect of X-rays on the pattern of nucleic acids in the regenerate. Ambystoma mexicanum 



(Urodela) (in collaboration with H. A. L. TRAMPUSCH) 

 b Nerve effect on regeneration. Ambystoma mexicanum (Urodela) (in collaboration with 



H. A. L. TRAMPUSCH) 

 VIGNAU, Miss J. Dr.Biol.anim. — Lab. de Zool. exper., Fac. des Sci. de Bordeaux, 40 Rue 



Lamartine, TALENCE (Gironde), France 

 a Recherches experimentales sur la morphogenese embryonnaire de la tete. Carausius spec. 



(Orthoptera) 

 VILIMKOVA (HABROVA), Mrs. V. RNDr. — Dept. of Gener. and Exper. Zool., Fac. of 



Sci., Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia 

 a Nucleic acids and subcellular particles in oogenesis and early development. (Amphibia) 



(in collaboration with J. NEDVIDEK) 

 VILLA, Miss L. Dr.Sc — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALER- 

 MO, Italia 

 a Electron microscopy of eggs. 

 VINCENT, Miss D. S. M.Sc. — Dept. of Anat., Med. School, Univ. of Birmingham, Edg- 



baston, BIRMINGHAM 15, England 

 a Effects of x-irradiation and changes in environment on the development of germ cells. 



Mustela furo (Carnivora) 

 • VINCENT, W. S. Ph.D., Prof. — Dept. of Anat. and Cell Biol., School of Med.. Univ. of 



Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. 

 a Control of ribosome formation in early oocytes; nucleolar chemistry of oocytes. Asterias 



forbesii, Arbacia punctulata (Echinodermata) 

 VISSER, J. G. J. D.Sc — Dept. of Zool., Univ. Coll. of Fort Hare. FORT HARE, C.P.. 



S.Africa 

 a Ontogeny of the chondrocranium. Microsaura p. pumila (Chamaeleontidae, Lacertilia) 



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