a Controle genetique, epigenetique et humoral du sexe chez des especes gonochoriques. Porcellio 



dilatatus, Armadillidiuin vulgare (Isopoda, Crustacea) 

 b Action at cellular and organic level of infectious agents (bacteroids, virus) and of external factors 



(temperature, photoperiod) on inversion of sex and intersexuality. Same species as a 

 LEGRELE, C; Dr.3e cycle - Lab. de Physiol. Anim., Univ. de Reims, B.P. 347, 51062 REIMS Cedex, 



France 

 a Pre- and postnatal functional maturation of the hepatocyte. Rattus norvegicus (Rodentia) (with 



J. M. FELIX and R. L. JACQUOT) 

 LEHMANN, K.; Dr.rer.nat. - Lehrst. Exper. Morphol., Zool. Inst, der Univ. Weyertal 119, 5000 



KOLN 41, B.R.D. (Germany) 

 a Structural and biochemical aspects of flight muscle protein development and z-disc during 



metamorphosis. Ephestia kiihniella, Galleria mellonella (Lepidoptera) 

 LEHTONEN, E. I.; M.D. - Lab. of Exp. Embryol., III. Dept. of Pathol., Univ. of Helsinki, Haart- 



maninkatu 3, 00290 HELSINKI 29, Finland 

 a Mechanism of kidney tubulogenesis. Mus musculus (Rodentia) (with L. O. SAXEN, J. J. 



WARTIOVAARA, S. NORDLING, P. EKBLOM and J. SALONEN) 

 LEHTONEN, J. - Dept. of Hot., Univ. of Turku, 20500 TURKU 50, Finland 

 LEIBENGUTH, F.; Dr.rer.nat., Prof. - Inst, tur Genet., Univ. des Saarlandes, 66 SAARBRUCKEN 11, 



B.R.D. (Germany) 

 a Mechanisms controUing ontogeny and tissue distribution of isoenzyme patterns by differential 



allele activity. Ephestia (= Anagasta) kuhniella (Lepidoptera) 

 b Onset of embryonic gene expression in vivo and in vitro. Drosophila melanogaster (Diptera) 

 LEIKOLA, A. H. A.; Ph.D. - Lab. of Exp. Embryol., Dept. of Zool., Univ. of Helsinki, Arkadiankatu 



7, 00100 HELSINKI 10, Finland 

 a Primary determination during gastrulation. Gallus domesticus, Coturnix coturnix (Aves) 

 LELIEVRE, Ms. C. S. - 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 Early determination of neural crest derivatives, especially mesectodermal and ganglion deriva- 

 tives. Gallus gallus, Coturnix c. japonica (Aves) 

 LEME2, L.; MUDr., Doc. - Dept. of Anat., Charles Univ., U nemocnice 3, 12800 PRAHA 2, 



Czechoslovakia 

 a Experimental topogenesis and morphology of the pneumogastric system. Gallus domesticus 



(Aves) 

 b Thrombocyte development. Same species as a 

 c Erythrocyte life span in the embryo. Same species as a 

 LE MOIGNE, A.; Prof. - Lab. de Biol. Anim., Univ. Paris XII (Val de Marne), av. du Gen. de Gaulle, 



94000 CRfiTEIL, France 

 a Developpement embryonnaire (microscopic electronique). (Planariidae, Turbellaria) 

 b RNA and protein synthesis, and cellular differentiation in regeneration (electron microscopy, 



biochemistry). Same species as a 

 c Activity of enzymes governing DNA synthesis during regeneration. Same species as a 

 LEMTIS, H. G.; Dr.med., Prof. - Spec. Team of Exp. Gynecol, of the Dept. of Obstet. and Gynecol., 



Klin. Steglitz, Free Univ. of Berlin, Hindenburgdamm 30, 1 BERLIN 45, B.R.D. (Germany) 

 a Architecture of the fetal and maternal placental blood vessels (corrosion preparations), and 



correlation of abnormal placental circulation with congenital malformations. Homo sapiens 



(Primates) 

 LENDER, Th.; Prof. - Lab. de Biol. Anim. A, Fac. des Sci., Univ. Paris-Sud, Bat. 445, 91405 ORSAY, 



LENDON, R. G.; Ph.D. - Dept. of Anat., The Univ., Stopford Bldg., Oxford Rd., MANCHESTER 



M13 9PT, England 

 a Embryogenesis of trypan blue induced spina bifida, exencephalus and facial abnormalities. Rattus 



norvegicus (Rodentia) 

 b Effect of vitamin deficiency on the incidence of congenital malformations. Same species as a 

 LENICQUE, P. M.; D.Sc. - Lab. de Biol, des Invert. Marins et Malacol., Museum Natl. d'Hist. Nat., 57 



rue Cuvier, 75005 PARIS, France 

 a Control of regeneration by some first messengers (neurohormones, polypeptides) and second 



messengers (nucleotides). Dugesia tigrina (Turbellaria), Metridium senile (Actinozoa) 

 LENZ, W.; Dr.med., Prof. - Inst, fiir Humangenet., Westf. Wilhelms Univ., Vesaliusweg 12-14,4400 



MUNSTER, B.R.D. (Germany) 

 a Classification problems of asymmetrical limb malformations. Homo sapiens (Primates) 

 LE PENNEC, M. L. M.; Dr.3e Cycle - Lab. de Zool., Univ. de Bretagne Occidentale, 6 av. le Gorgeu, 



29283 BREST Cedex, France 

 a Laboratory rearing of larvae and juveniles. Various spp. (Lamellibranchia) 

 b Morphogenesis of the hinge in larvae. Veneridae, Pectinidae, Mytilidae, Ostreidae, Anomiidae and 



others (Lamellibranchia) 

 LEPORI, N. G.; Prof. - 1st. di Zool., Univ. di Sassari, Via Murroni 25, 07100 SASSARI, Italy 

 LE ROUX, Ms. S.; D.E.A. - Lab. de Zool., Univ. de Bretagne Occidentale, 6 av. le Gorgeu, 29283 



BREST Cedex, France 

 a Larval growth: 1. effect of feeding unicellular algae; 2. effect of hydrocarbons. Mytilus edulis, 



Pecten maximus (Lamellibranchia) 

 LESCHER-MOUTOUE, Ms. F. - Lab. Souterrain, Centre Natl. Rech. Scient., 09410 MOULIS, France 

 a Reproduction, life cycle, and postembryonic development, especially of hypogeous species: 



Speocyclops spp., Graeteriella spp., Diacyclops spp., Eucyclops spp. (Copepoda, Crustacea) 



63 



