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



29283 BREST Cedex, France 

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

 a Fission. Dugesia gonocephala sJ. (Turbellaria) 



LE ROUX, A.; Lic.es Sci. - Stat. Biol, de Bailleron, Sene, Univ. de Rennes I, 56000 VANNES, France 

 a Anatomy and histology of the Y gland during larval life, in relation with mitotic activity in epi- 

 dermic tissues (digestive tract and pereiopods); its bearing on moulting and exuviation. Pisidia 



(= Porcellana) longicornis (Anomura, Decapoda, Crustacea) 

 b Organogenesis and function of the mandibular organ in larva and early adult. Same species as a 

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



BREST Cedex, France 

 LESOT, H. - Inst, de Biol. Med., Univ. L.Pasteur, 11 Rue Humann, 67085 STRASBOURG, France 

 a Analysis of collagen synthesized by tooth germs 

 LESTAGE, J.; Dr.biol.anim. - Lab. de Biol. Anim. A, Univ. de Bordeaux I, av. des Facultes, 33405 



TALENCE Cedex, France 

 a foude e.xperimentale de I'influence des facteurs nutritionnels sur la morphogenese du tube diges- 

 tif et du pancreas. Rana dalmatina, Bufo bufo, Discoglossus pictus, Xenopus laevis (Anura), 



Triturus helveticus, Salamandra salamandra (Urodela) 

 b Modifications des patterns enzymatiques au cours de la differenciation des cellules intestinales. 



Bufo bufo, Xenopus laevis (Anura) 

 LEUBA, Ms. G.; D.Sc.biol. - Div. Autonome de Neuropathol., Univ. de Lausanne, 1011 LAUSANNE, 



Switzerland 

 a Changes during development and ageing in the genome integrity of the cerebral cortex. Mus 



musculus (Rodentia) (with S. P. MODAK and M. C. CORREA) 

 LEVAK (SVAJGER), Ms. B.; D.Sc. - Inst, of Biol., Fac. of Med., Univ. of Zagreb, Salata 3, P.O. Box 



166, 41001 ZAGREB, Yugoslavia 

 a Differentiative and morphogenetic capacities of germ layers; transplantation of isolated germ 



layers to extrauterine sites. Rattus norvegicus (Rodentia) (with A. SVAGER (Inst, of Histol. 



and Embryol.) and N. SKREB) 

 LEVIS, A. G.; Prof. - 1st. di Biol. Anim., Univ. di Padova, Via Loredan 10, 35100 PADOVA, Italy 



no embryological work in progress 

 LEWIS, J. H.; D.phU. - Dept. of Biol, as Appl. to Med., Middlesex Hosp. Med. Sch., LONDON WIP 



6DB, England 

 LEZZI, M.; Dr.sci.nat. - Inst, of CeU Biol., Swiss Fed. Inst, of Technol., Honggerberg, 8093 ZURICH, 



Switzerland 

 a Effect of hormones and ions on gene function. Chironomidae (Diptera) 

 LHEUREUX, E.; D.Sc. - Serv. de Biol. Anim., Univ. des Sci. et Techn. de Lille, B.P. 36, 59650 



VILLENEUVE D'ASCQ, France 

 a The fate of different tissues in regenerated limb. Pleurodeles waltl (Urodela) 

 LIEBRICH, W.; Dr.rer.nat. - Inst, fur Allgem. Biol., Univ. Diisseldorf, Universitatsstr. 1, 4000 



DUSSELDORF, BRD (Germany) 

 a Morphology and mechanisms of spermatogenesis in organ culture. Drosophila melanogaster, D. 



hydei (Diptera) 

 LIERSE, W.; Dr.med., Prof. - Abt. Neuroanat., Anat. Inst, der Univ., Martinistrasse 52, 2 HAMBURG 



20, BRD (Germany) 

 a Ultrastructure and histochemistry of brain and retina development. Cavia porcellus, Rattus spec. 



(Rodentia) 

 b The biological aspect of neuroblast and glioblast following x-irradiation and hyperbaric oxygena- 

 tion. Same species as a 

 c The development of vascularization of the brain. Cavia porcellus, Rattus spec. (Rodentia), Canis 



famiUaris (Carnivora), Homo sapiens (Primates) 

 d Teratology of retina and brain. Rattus spec. (Rodentia) 

 LIMBORGH, J. van; M.D., Prof. - Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, 1092 



AD AMSTERDAM-0., Netherlands 

 LINDE;, A.; DDS, Odont.Dr. - Lab. of Oral Biol., Dept. of Histol., Univ. of Goteborg, Fack, 400 33 



GOTEBORG 33, Sweden 

 a Calcification, especially dentinogenesis in incisor: 1. characteristics, synthesis and degradation of 



proteins, glycoproteins, proteoglycans and phosphoprotein in dentin, enamel and bone; 2. separa- 

 tion, characterization and localization of alkaline phosphatases in odontoblasts and osteoblasts; 



3. changes in odontoblast metabolism (energy-, synthetic) in disturbed calcification due to a low 



Ca, vit.D free diet. Rattus spec. (Rodentia) 

 LINDENMAYER, A.; Ph.D., Prof. - Theor. Biol. Group, State Univ. of Utrecht, Padualaan 8, Postbus 



80 059, 3508 TB UTRECHT, Netherlands 

 a Morphogenetic processes giving rise to phyllotactic patterns of the shoot apex. (Pteridophyta; 



Spermatophyta) 

 b Developmental algorithms for cell lineage and cellular interactions considered from the point of 



view of automata and language theory 

 c Mathematical models for vegetative and flowering development in complex inflorescences. (Com- 



positae) 

 d Computer simulation of distribution of ceU cycle phases in growing roots. (Gramineae) (with 



C. HARTE (Koln)) 

 e Graph- and map-generating systems as models of multidimensional development, particularly of 



cell layers in leaf epidermis. (Musci), Selaginella spec. (Lycopodiophyta) 



69 



