UNDER, E. - Dept. of Pathol., Univ. of Helsinki, Haartmaninkatu 3,00290 HELSINKI 29, Finland 

 a Development of connective tissue components in foetal dermis, (with S. STENMAN and V. P. 



LEHTO) 

 LINK, Ms. B.; Dipl.biol. - Dept. of Genet., Cathol. Univ., Toernooiveld, 6525 ED NIJMEGEN, 



Netherlands 

 a Ultrastructure of spermiogenesis. Drosophila hydei (Dipt era) 

 LINSKENS, H. P.; Dr., Prof. - Sect. Molec. Devi. Biol., Dept. of Bot., Cathol. Univ., Toernooiveld, 



NIJMEGEN, Netherlands 

 a Physiological and biochemical mechanism of the fertilization barrier during pollen tube growth, 

 pollen germination, and in the ovule. Petunia spec, Salpiglossis spec, Nicotiana spec. (Solana- 

 ceae), Lilium spec. (Liliaceae) 

 b Induction of meiotic division. Ulva spec. (Chlorophyceae), Lilium spec. (Liliaceae), Sacchaio- 



myces spec. (Ascomycetes) 

 c Dormancy. Agrostemma githago (Caryophyllaceae) 

 LIOSNER, L. D.; Dr.biol., Prof. - Inst, of Human Morphol., Acad, of Med. Sci. of the USSR, Tsurupa 



St. 3, MOSCOW 117469, USSR 

 LISSIA (FRAU), Ms. A. M.; Dr. - 1st. di Zool., Univ. di Sassari, Via Murroni 25, 07100 SASSARI, 

 Italy 



no work on developmental biology in progress 

 LITTLEFIELD, Ms. C. L.; Ph.D. - Zool. Inst, der Univ. Zurich, Winterthurerstr. 190, 8057 ZURICH, 



Switzerland 

 a Masculmization of females in heterosexual grafts. Hydra camea (Hydrozoa) 

 b Stability and instability of sexuality (gonochorism vs. hermaphroditism) studied by genetic 



analysis of species hybrids. (Hydrozoa) 

 c Effect of sexuality on asexual reproduction. Same species as a 

 LIWSKA, Ms. J.; Dr. Biol. - Dept. of Histol. and Embryol., Warsaw Agric Univ., ul.Nowoursynowska 



166!02-766WARSZAWA, Poland . -^ 



a Ultrastructure of hypophysis development in the embryo. Sus scrofa domesticus (Artiodactyla) 

 LOFBERG, J. E.; Ph.D. - Inst, of Zool., Uppsala Univ., Box 561, 751 22 UPPSALA, Sweden 

 a Extracellular matrix fibrils as substrata for migrating neural crest cells and extendmg neuntes m 



embryos (SEM, TEM). (Amphibia) .. , ^ ^ ^^^ ^^ 



LOHMANN, K.; Dr.rer.nat. - Zool. Inst, der Univ., Weyertal 119, 5000 KOLN 41, BRD (Germany) 

 a Cytochemistry and biochemistry of gene activation during gastrulation and neurulation, especially 



gene amplification and nucleic acid synthesis. Triturus vulgaris (Urodela) 

 b DNA RNA and protein synthesis in the cell cycle of embryonic cells. Same species as a 

 LOHS-SCHARDIN, Ms. M.; Dr.rer.nat. - Biol. Inst. I (Zool.) der Univ., Albertstr. 21a, 7800 



FREIBURG, BRD (Germany) ^- . . 



a Fate mapping of the blastoderm by UV laser microbeam. Drosophila melanogaster (Diptera) 

 b Mutants affecting patterning in early embryogenesis. Same species as a ^ „ r 



LOMBARD (DES GOUTTES), Ms. M. N.; D.Sc - Unite de Physiol. Cell., U 22 INSERM, Inst, du 



Radium, Bat. 110, 91405 ORSAY, France 

 a Steroidogenetic cells in developing ovary (cytology, light and electron microscopy, histochemis- 

 try of delta-5-3-beta-hydroxysteroid dehydrogenase). Mus musculus (Rodentia) 

 b Factors affecting in vitro 3H-thymidine uptake by embryonic and post-embryonic hepatic ceUs. 

 Rattus norvegicus (Rodentia) ^ . i 



c Serum and liver cytosol factors affecting cell cycle frequency of hepatocytes durmg postnatal 

 development. Same species as b r. • u 



d Sex-related responses to in vivo stimulation of cell proliferation in the hver. Same species as b 

 e Postnatal plasmatic hormone level variations in relation with experimental induction of a wave 



of synchronized hepatocytes entering a cell cycle (S-phase). Same species as b 

 LONNING (VADER), S.; Dr.phil., Prof. - Inst, of Biol, and Geol., Univ. of Tromso, P.O. Box 790, 



9001 TROMSO, Norway . ^ m u- a 



a Fertilization and early development (experimental study, electron microscopy). (Echmoidea; 



Xclcostci) 

 b Effect of oil pollution on early development. (Echinoidea; Teleostei) 

 LOONES, Ms. M. T.; Dr.3e Cycle - Lab. de Genet, du Devi., Univ. P. et M. Curie, Ctr. de Rech. d Ivry, 



67 rue M. Giinsbourg, 94200 IVRY-sur-SEINE, France . 



a Spontaneous and induced mutations detected on lampbrush chromosomes and then- relationship 

 with embryogenesis. Pleurodeles poireti, P. waltl (Urodela) w^^^^,,, 



LOPASHOV, G. v.; Dr.biol., Prof. - Inst, of Devi. Biol., USSR Acad, of Sci., Vavilov St. 26, MOSCOW 



117334' USSR ... ■ u f 



a Stimulation of metaplasia of the pure pigmented epithelium of adults into retina by means ol 



agents from newly differentiated retina. (Rodentia) (with A. A. SOLOGUB) 

 b Inductive transformation of iris and pigment epithelium into lens tissue by agents from lens 



epithelium. Rana temporaria (Anura) (with O. A. HOPERSKAYA) 

 c Artificial transformation of nucleo-cytoplasmic fragments of muscle cells under the action ot 



Uving retina. Same species as b • * ^t, 



d Restoration of lenses by means of implantation of cell cultures of lens epithelium mto the 



pupil of adults. Bombina bombina (Anura), Mus musculus (Rodentia) 

 LOPEZ-CAMPS, J.; Dr. - Serv. de Micr. Electronica, Univ. de Barcelona, Granvia 585, BARCELONA 



a Oogenesis, spermatogenesis and fertilisation. Heterocypris incongruens (Ostracoda), Mytilicola 

 intestinalis (Copepoda),Triops cancriformis (Notostraca), and other spp. (Crustacea) 



LORENC, Ms. E.; Ph.D. - Dept. of Genet, and Evolut., Inst, of Zool., Jagellonian Univ., ul. Karasia 6, 

 30-060 icRAKOW, Poland 



70 



