VIRTANEN, I. - Lab. of Exp. Embryol., III. Dept. of Pathol., Univ. of Helsinki, Haartmaninkatu 3, 



00290 HELSINKI 29, Finland 

 a Freeze-etching electron microscopy of ribosome-membrane association in liver cells. Rattus spec. 



(Rodentia) (with J. J. WARTIOVAARA) 

 b Differentiation of liver parenchyme cells in tissue culture. Same species as a 

 VITTORELLI, Ms. M. L.; Dr.Biol. - 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 



PALERMO, Italy 

 a DNA synthesis in dissociated embryonic cells. Paracentrotus lividus (Echinoidea) 

 b Isolation of blastula cell membranes and detection of enzymatic activities. Same species as a 

 c Detection of cyclic AMP in embryos and in dissociated embryonic cells. Same species as a 

 VIZA, D.; M.D. - Lab. d'Immunobiol., Pathol. Gen. et Exper., Fac. de Med. Pitie-Salpetriere, 105 Bd. 



de THopital, 75634 PARIS Cedex 13, France 

 VOGEL, O.; Dr.rer.nat. - Biol. Inst. I. (Zool.) der Univ., Albertstr. 21a, 7800 FREIBURG, B.R.D. 



(Germany) 

 a Classical and biochemical aspects of pattern formation. Drosophila spec. (Diptera), Euscelis 



plebejus (Homoptera) 

 VOLLMAR, H.; Dr.rer.nat. - Biol. Inst. I (Zool.) der Univ., Albertstr. 21a, 78 FREIBURG, B.R.D. 



(Germany) 

 a Embryonic determination. Acheta domesticus (Orthoptera) 

 b Morphogenetic movements during early embryogenesis. Same species as a, and Aeschna cyanea 



(Odonata), Leptinotarsa decemlineata (Coleoptera), Rivulus milesi (Teleostei) 

 VOLLRATH, L.; Dr.med., o.Prof. - Anat. Inst, der Univ., Saarstr. 19-21, 6500 MAINZ, B.R.D. 



(Germany) 

 VOSSEN, J. G. H. M.; Drs. - Dept. of Genet., Cathol. Univ., Toernooiveld, NIJMEGEN, Netherlands 

 a Induction of puffing by injection of mitochondrial extracts into salivary gland cells. Drosophila 



hydei (Diptera) 

 VREEZEN, Ms. W. J.; Drs, - Genet. Lab., State Univ., Kaiserstr. 63, LEIDEN, Netherlands 

 a Selection on asymmetrical wing development. Drosophila melanogaster (Diptera) 

 VRIES, O. M. H. de; Dept. of Developm. Plant Biol., State Univ. of Groningen, Biol. Ctr., Kerklaan 



30, HAREN (Gr.), Netherlands 

 a Genome activity during development. Schizophyllum commune (Basidiomycetes, Fungi) 

 VYAZOV, O. E.; Dr.med., Prof. - Lab. of Embryol., Inst, of Human Morphol., Acad, of Med. Sci. of 



the USSR, Tsurupa St. 3, MOSCOW 117469, U.S.S.R. 

 WABIK-SlIZ, Ms. B.; M.Sc. - Dept. of Genet, and Evolut., Inst, of Zool., Jagellonian Univ., 



Krupnicza 50, 30-060 KRAK6W, Poland 

 a Ultrastructure of sperm and eggs from inbred and crossbred animals. Mus musculus (Rodentia) 

 WADA, S.: Dr.rer.nat. - Zool. Inst., Univ. DUsseldorf, Universitatsstr. 1, 4000 DUSSELDORF 1, 



B.R.D. (Germany) 

 a Morphogenesis of the compound eyes. (Arthropoda) 

 WAGNER, E.; Dr.rer.nat. - Biol. Inst. II der Univ., Lehrst. fiir Bot., Schanzlestr. 1, 78 FREIBURG/ 



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

 a Interaction of phytochrome and endogenous rhythms in photoperiodic control ot growth and 



development. Chenopodium rubrum (Chenopodiaceae) 

 WAKELEY (DENT), Ms. J.; Ph.D. - Anat. Dept., Univ. of Leicester, Med. Sci. Bldg., University Rd., 



LEICESTER LEI 7RH, England 

 a Normal development and congenital defects in the lens. Gallus domesticus (Aves) 

 b Cell shape and movements in the embryo. Same species as a 

 WAKITA, M.- Dr.med. - Inst, fur Anat. I, Ruhr-Univ., Geb.MA 5/162, Universitatsstr. 150, Postfach 



102148, 4630 BOCHUM 1, B.R.D. (Germany) 

 a Cell differentiation of ameloblasts. (Teleostei), Mus musculus (Rodentia) 

 b Phylogenetic development of tooth enamel. (Vertebrata) 



c Relations between replacement pattern in very early stages of tooth development and distribu- 

 tion of neural crest cells that initiate the teeth. (Amphibia) 

 WAL, U. P. v.d.; Ph.D. - Zool. Lab., State Univ. of Utrecht, Transitorium III, Padualaan 8, 



UTRECHT, Netherlands 

 a Electron microscopy of chemical transformation of yolk into membrane elements in degenerating 



yolk granules. Lymnaea stagnalis (Gastropoda) 

 b Electron microscopy of the synthesis of new cytoplasmic membrane elements during early 



cleavage. Same species as a 

 c Electron microscopy of segregated cytoplasmic elements. Same species as a 

 d Electron microscopy of cell contacts during cleavage. Same species as a 

 WALKER, D. G.; Ph.D., D.Sc, Prof. - Dept. of Biochem., Univ. of Birmingham, P.O.Box 363, 



BIRMINGHAM B15 2TT, England 

 a Enzyme development and metabolic regulation in fetus and neonate. Rattus spec. (Rodentia) 

 WALL, R.; B.Sc. - Dept. of ZooL, Univ. of Liverpool, P.O.Box 147, LIVERPOOL L69 3BX, England 

 a Biochemistry of normal and abnormal early development (lithium, RNA synthesis, polysomes, 



induction). Xenopus laevis (Anura) 

 WALLACE, H.; Ph.D. - Dept. of Genet., Univ. of Birmingham, Edgbaston, P.O.Box 363, 



BIRMINGHAM B15 2TT, England 

 a Limb regeneration. Ambystoma spec. (Urodela) 

 b Sex determination. Pleurodeles waltl (Urodela) 

 WARTENBERG, H.; Dr.med., Prof. - Anat. Inst., Abt. fur Exper. BioL, Univ. Bonn, Nussallee 10, 53 



BONN, B.R.D. (Germany) 

 a Light and electron microscopy of male and female germ cells during pre- and postnatal develop- 



107 



