a Organogenese des membres (histochimie, microchirurgie, cytologic ultrastructurale, teratogenese 



experimentale). Pleurodeles waltl (Urodela) 

 LAVERDURE, Ms. A.-M. - Lab. de Biol. Anim. A, Fac. des Sci., Univ. Pahs-Sud, Bat. 445, 91405 



ORSAY, France 

 LAWRENCE, A. J.; Ph.D. - Dept. of Cell Biol., Univ. of Glasgow, GLASGOW Gil 6NU, Scotland, 



U.K. ^,. . 



a Control and temperature dependence of phospholipase activity in cell membranes; role of lipid 



degradation in membrane fusion; lipid segregation in membranes. Oryctolagus cuniculus 



(Lagomorpha) 

 LAWRENCE, P. A.; Ph.D. - Lab. of Molec. Biol., Med. Res. Counc, Hills Rd., CAMBRIDGE CB2 



2QH, England 

 a Compartments in insect development. Drosophila melanogaster (Diptera), Oncopeltus fasciatus 



(Heteroptera) 

 b Developmental genetics of homoeotic mutants. Same species as b 

 LAWSON, Ms. K. A.; Ph.D. - Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 8, 3584 CT 



UTRECHT, Netherlands 

 a Morphogenetic and growth control of salivary gland, lung and metanephros in vitro. Rattus 



norvegicus, Mus musculus (Rodentia) 

 LAZARD (HAUBEN), Ms. L.; D.Sc. - Inst. d'Embryol. du C.N.R.S. et du Coll. de France, 49bis av. 



de la Belle Gabrielle, NOGENT-sur-MARNE, France 

 a Degeneration of male germ cells in some t mutants; their possible transformation in tumorigenic 



cells: growth in vitro, transplantation in vitro, antigenic affinity with embryocarcinomal cell lines 



originating from germ cells (as F 9 from mouse 129). Mus musculus (Rodentia) 

 b Retro-transformation of a teratocarcinomal cell line of germinal origin, grown in vitro, into cells 



having recovered spermatogenetic abilities. Same species as a 

 LE DOUARIN (CHAUVAC), Ms. N. M.; D.Sc, Prof. - 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 Migration and differentiation of neural crest cells (interspecific grafts). Gallus gallus, Coturnix c. 



japonica (Aves) 

 b Differentiation of the autonomic nervous system studied in chimeric embryos. Same species as a 

 c Development of primary lymphoid organs. Same species as a 

 d Migration and homing of lymphoid stem cells studied in embryos by interspecific chimeras. Same 



species as a 

 e Experiments on liver development. Same species as a 



LEENDERS, H. J.; Dr. - Dept. of Genet., Cathol. Univ., Toernooiveld, NIJMEGEN, Netherlands 

 a The mechanism of gene activation by factors involved in respiratory metabolism; experimental 



puff induction. Drosophila hydei (Diptera) 

 LEES, A. D.; Sc.D., Prof. - Dept. of Zool. and Appl. Entomol., Imperial Coll., Field Station, Silwood 



Park, ASCOT, Berks. SL5 7DE, England 

 a Control of polymorphic development with special reference to environmental factors and 



hormones. Megoura viciae (Aphididae, Homoptera) 

 LEEUWEN, F. W. van; Drs. - Netherl. Inst, for Brain Res., IJdijk 28, AMSTERDAM, Netherlands 

 a Interaction with hormones during maturation and adaptation of the nervous system. Rattus 



norvegicus (Rodentia), Homo sapiens (Primates) 

 LEFFORD (FERNANDO), Ms. F.; Ph.D. - Dept. of Anat. and Embryol., Univ. CoU. London, 



Gower St., LONDON WCIE 6BT, England 

 a Migratory behaviour of cells in vitro 



LEFRESNE, J.; M.Sc. - Lab. d'Embryol., U.E.R. de Sci., Univ. de Caen, 14032 CAEN, France 

 a £tude experimentale de la segmentation. Ambystoma mexicanum (Urodela) 

 LE GARFF, B.; Dr. 3e cycle - Lab. de Biol. Anim. let Cycle, Univ. de Rennes, Av. du Gen. Leclerc, 



35031 RENNES Cedex, France 

 a Development of malpighian system during larval life and metamorphosis: normal development; 



nutritional factor; transplantation; culture in vitro. Galleria mellonella (Lepidoptera) 

 b Comparative research of the development of malpighian system. Tineidae and other families 



(Lepidoptera) 

 LEGAY, J. M.; D.Sc, Prof. - Dept. de Biol. Gen. et Appl., Univ. de Lyon I, 43 Bd. du 11 Novembre 



1918, 69621 VILLEURBANNE, France 

 a Morphogenesis. Bombyx mori (Lepidoptera) 

 LEGENDRE, R.; Dr.rer.nat., D.Sc, Prof. - Lab. de Zool. II (Morphol. et Ecol.), Univ. des Sci. et 



Techn. du Languedoc, place E. Bataillon, 34060 MONTPELLIER, France 

 a Embryonic and post-embryonic development. (Araneida, Arachnida) 

 LEGRAND, C; D.Sc. - Lab. de Biol, de la Reprod., Univ. Paris VI (P. et M. Curie), Bat. A, 7eme 



etage, 7 quai Saint-Bernard, 75230 PARIS Cedex 05, France 

 a Fonctions, morphogenese et cytophysiologie du trophoblaste intra-arteriel. Rattus norvegicus 



(Rodentia) 

 b Effets de rovariectomie tardive sur I'ultrastructure et la fonction endocrine du placenta. Meme 



espece comme a 

 LEGRAND (HAMELIN), Ms. E.; Dr., Prof. - Lab. de Physiol, et Genet, des Crustaces, Univ. de 



Poitiers, 40 av. du Recteur Pineau, 86022 POITIERS Cedex, France 

 a Controle genetique et humoral du sexe. Idotea balthica (Isopoda, Crustacea) 

 b Effect of temperature, photoperiod and salinity on inversion of sex and intersexuality. Same 



species as a 

 LEGRAND, J. J.; Dr., Prof. - Lab. de Physiol, et Genet, des Crustaces, Univ. de Poitiers, 40 av. du 



Recteur Pineau, 86022 POITIERS Cedex, France 



62 



