Gower St., LONDON WC1E 6BT, England 

 a Effects of donor age on cell behaviour in tissue and organ culture. Gallus domesticus (Aves) 

 LEFRESNE, J. Maftre es Sci. - Lab. d'Embryol., Unite de Sci., Univ. de Caen, 14032 CAEN, France 

 a Etude experimental de la segmentation. Amby stoma mexicanum (Urodela) 

 LEGAY, J. M. Dr.es Sci., Prof. - Sect, de Biol. Gener. et Appl., Univ. de Lyon I, 43 Bd. du 



11 Novembre 1918,69621 VILLEURBANNE, France 

 a Postembryonic development in relation to parental generation and selection. Bombyx mori 



(Lepidoptera), Ceratitis capitata (Diptera) 

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



Techn. du Languedoc, Place Eugene Bataillon, 34060 MONTPELLIER, France 

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

 LEGHISSA, S. Ph.D., Prof. - 1st. di Anat. Comp., Univ. di Bologna, Via Belmeloro 8, 40126 



BOLOGNA, Italy ISDB 



LEGRAND, Ch. Dr.3e Cycle Lab. de Biol, de la Reprod., Univ. de Paris VI, B.P.261, 75827 



PARIS-Cedex 17, France 

 a Fonctions du trophoblaste intra-arteriel. Rattus norvegicus (Rodentia) 

 LEGRAND (HAMELIN), Mrs.E. Dr. - Lab. de Physiol, et Genet, des Crustaces, Univ. de Poitiers, 40 



av. du Recteur Pineau, 86022 POITIERS, France 

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

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



Recteur Pineau, 86022 POITIERS, France 

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



hermaphrodites. Porcellio dilatatus, Armadillidium vulgare, Anilocra frontalis (Isopoda, 



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



Haartmaninkatu 3, 00290 HELSINKI 29, Finland 

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



WARTIOVAARA) 

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

 a Macrotemplate system. Micrasterias spec. (Desmidiaceae) 

 LEIBENGUTH, F. Dr.rer.nat., Prof. Inst, fur Genet., Univ. des Saarlandes, 66 SAAR- 



BRUCKEN 1 1, B.R.D. (Germany) 

 a Mechanisms controlling 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, HELSINKI 10, Finland 

 a Primary determination of the central nervous system. Triturus vulgaris (Urodela), Gallus 



domesticus (Aves) 

 LELIEVRE, Miss C. S. - Lab. d'Embryol., Univ. de Nantes, 38 Bd.Michelet, B.P.1044, 44037 



NANTES CEDEX, France 

 a Etude experimentale de la differenciation des cellules a calcitonine. Gallus gallus, Cotumix 



c. japonica (Aves) 

 b Origine embryologique des arcs visceraux (greffes interspecifiques). Same species as a 

 c Participation des cellules issues des cretes neurales cephaliques a la formation des structures 



pharyngiennes. Same species as a 

 LEMEZ\ L. MUDr. - Dept. of Anat., Charles Univ., U nemocnice 3, 12800 PRAHA 2, Czecho- 

 slovakia 

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



(Aves) 

 b Thrombocyte development. Gallus domesticus (Aves) 

 c Erythrocyte life span in the embryo. Gallus domesticus (Aves) 



LE MOIGNE, A. - Lab. de Biol. Anim., Fac. des Sci., Univ. Paris Sud, 91405 ORSAY, France 

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

 LEMTIS, H. G. Dr.med., Prof. - Dept. of Obstet. and Gynecol., Klin. Steglitz, Free Univ. of Berlin, 



Hindenburgdamm 30, 1 BERLIN 45, B.R.D. (Germany) 

 a The passage of drugs across the placenta studied in an artificial uterus. Homo sapiens (Primates) 

 b Reaction of the fetal vascular system of the placenta to morphine and similar substances. Same 



species as a 

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



France 

 a Regeneration: substances inductrices et inhibitrices. (Planariidae, Turbellaria) 

 b Microscopie electronique de la regeneration, en particulier des neoblastes. Dugesia gonocephala 



(Turbellaria) 

 c Neurosecretion. (Planariidae, Turbellaria) 

 d Regeneration. Asterina gibbosa (Asteroidea) 



e Culture in vitro d'organes larvaires. Galleria spec. (Lepidoptera), Periplaneta spec. (Blattariae) 

 f Culture in vitro de gonades femelles. Tenebrio molitor (Coleoptera) 

 LENFANT, Miss M. Dr.3eme cycle - Lab. d'Embryol., Univ. Paris VI, 4 place Jussieu, 75230 PARIS 



Cedex 05, France 

 a Blood cell cultures. (Urodela, Anura) 

 LENICQUE, P. M. Dr.es Sci. - Lab. de Biol, des Invert. Marins et Malacol., Museum Natl. d'Hist. 



Nat., 57 rue Cuvier, 75005 PARIS, France 

 a Role of neurohormones in regeneration. Dugesia tigrina (Turbellaria) 



59 



