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



(Aues) 

 LEFRESNE, J. Maitre es Sci. — Lab. d'Embryol., Unite de Sci., Univ. de Caen, 14 CAEN, 



France 

 a Etude experimentale de la segmentation. Ambystoma mexicanum (Ucodela) 

 LEGAY, }. M. Dr.es Sci., Prof. — Sect, de Biol. Gener. et Appl., Univ. de Lyon I 43 Bd 



du 11 Novembre 1918, 69 VILLEURBANNE, France 

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



(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, 34 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, 



BOLOGNA (103), Italy • 



LEGNAME, A. H. Dr.Biochem. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 461, 



S.M. de TUCUMAN, Argentina 

 a Respiratory metabolism. Bufo arenarum (Anura) 

 b Mitochondria during embryogenesis. Bufo arenarum (Anura) 

 LEGNAME, C. R. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 461, S.M. de 



TUCUMAN, Argentina 

 a Nuclear transplantation (early stages until neurulation) : 1. haploid and diploid nuclei; 



2. electrophoretic analysis of proteins. Bufo arenarum (Anura) 

 LE GOASCOGNE, C. D.E.S. — Inst. Natl, de la Sante et de la Rech. Med., Unite de 



Physiol, placent, Hop. Saint-Antoine, 184 rue du Faubourg Saint-Antoine, 75 PARIS 



Xlle, France 

 LEGRAND, Miss C. — Inst. Natl, de la Sante et de la Rech. Med., Unite de Physiol. Placent., 



Hop. Saint-Antoine, 184 rue du Faubourg Saint-Antoine, 75 PARIS Xlle, France 

 LEHMAN. H. E. Ph.D. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C. 



27514, U.S.A. • 



LEHMANN, R. Dr.rer.nat. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 78 FREI- 

 BURG, W.Germany 

 a Influence of temperature, pH and some metabolites on differentiation of fine structure and 



histochemistry of embryonic cells. Triturus alpestris (Urodela) 

 b Effects of polyions and ions on differentiation; localization of ions in embryonic cells on 



electron microscopic level under normal and experimental conditions. Triturus alpestris, T. 



helveticus (Urodela) , Xenopus laevis (Anura) 

 LEIGHTON, J. M.D., Prof. — Dept. of Pathol., Sch. of Med., Univ. of Pittsburgh, PITTS- 

 BURGH, Pa. 15213, U.S.A. • 

 LEIKOLA, A. H. A. Ph.D. — Lab. of Exper. Embryol., Dept. of Zool., Univ. of Helsinki, 



Arkadiankatu 7, HELSINKI 10, Finland 

 a Primary induction. Gallus domesticus (Aves) 

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



44 NANTES, France 

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



c. japonica (Aves) 

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

 LEMEZ. L. MUDr. — Dept. of Anat., Charles Univ., U nemocnine 3, PR AH A 2, Czechoslo- 

 vakia 

 a Embryonal haematology. Gallus domesticus (Aves) 

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



(Aves) 

 LE MOIGNE, A. — Lab. de Biol. Anim., Fac. des Sci., Univ. Paris Sud, 91 ORSAY, France 

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

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



Berlin, Hindenburgdamm 30, 1 BERLIN 45, W.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 n JV 



LENDER, Th. Prof. — Lab. de Biol. Anim., Fac. des Sci., Univ. Paris Sud, 91 ORbAY, 



France 

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

 b Microscopie electronique de la regeneration, en particulier des neoblastes. Dugesta gono- 



cephala (Turbellaria) 

 c Neurosecretion. (Planariidae, Turbellaria) 

 d Regeneration. Asterina gibbosa (Asteroidea) 

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



(Blattariae) 

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



107 



