Heidelberglaan 2, 'De Uithof, UTRECHT, Netherlands 

 a The morphogenetic processes giving rise to phyllotactic patterns of the shoot apex. (Pterido- 



phyta; Spermatophyta) 

 b Developmental instructions for cellular interactions and divisions considered from the point of 



view of automata and language theory. 

 c Mathematical models for the transition from vegetative to flowering condition in complex 



inflorescences. (Angiospermae) 

 LINDSAY, Mrs. F. E. F. M.R.C.V.S. - Anat. Dept., Vet. Sch., Univ. of Glasgow, Bearsden Rd., 



GLASGOW G6 1 1QH, Scotland, U.K. 

 a Identification of loci of ossification of skull; development of stress lines in vertebrae 



(radiography, microradiography, staining). Bos taurus (Artiodactyla) 

 b Descriptive and comparative anatomy of the developing lung. Bos taurus (Artiodactyla), Canis 



familiaris, Felis domestica (Carnivora) 

 LINSKENS, H. F. Dr., Prof. - Dept. of Bot., Univ. of Nijmegen, Toernooiveld, NIJMEGEN, 



Netherlands 

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



pollen germination, and in the ovule. Petunia spec. (Solanaceae), Lilium spec. (Liliaceae) 

 b Induction of meiotic division. Ulva spec. (Chlorophyceae), (Saccharomycetales), Lilium spec. 



(Liliaceae) 

 LINTERN-MOORE. Mrs. S.M. Ph.D. - Finsen Lab., Finsen Inst., 49 Strandboulevarden, 2100 



COPENHAGEN 0, Denmark 

 a Development of the infant ovary. 



b Role of the thymus in ovarian development. Mus musculus (Rodentia) 

 LIOSNER, L. D. Dr.biol.sci. - Inst, of Human Morphol., Acad, of Med. Sci. of the U.S.S.R., 



Shchepkin St. 61/2, MOSCOW 125110, U.S.S.R. 

 a Mechanisms controlling the restoration of inner organs. Rattus norvegicus, Mus musculus 



(Rodentia) 

 LIOTTI, F. S. Dr., Prof. - 1st. di Biol. Gener., Univ. di Perugia, Via del Giochetto, 06100 PERUGIA, 



Italy 

 a Sviluppo dei meccanismi eritropoietici durante la vita neonatale. Oryctolagus cuniculus 



(Lagomorpha) 

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



Italy 

 a Gonadogenesis and sexual differentiation. Perca fluviatilis, Cyprinus carpio (Teleostei) 

 LITVAC, B. M.D. - Dept. of Med. Biol., Med. School, P-t,a 23 August 1, TIMIS.OARA, Rumania 

 a Electron microscopy of embryonic cell death. Gallus domesticus (Aves) 

 LIWSKA, Miss J. mgr.Biol.Sci. - Dept. of Histol. and Embryol., Warsaw Agric. Univ., ul. 



Grochowska 272, WARSZAWA, Poland 

 LOCCI, Miss P. Dr.biol.sci. - Inst, of Histol. and Gen. Embryol., Univ. of Perugia, Via del Giochetto, 



06100 PERUGIA, Italy 

 a Immunochemical and chromatographic research on transfer of albumen and yolk proteins into 



the embryo. Gallus domesticus (Aves) 

 LOFBERG, J. E. Fil.lic. - Zool. Inst., Univ. of Uppsala, Box 561, S-75122 UPPSALA 1, Sweden 

 a Electron microscopy of the process of neurulation. Ambystoma mexicanum (Urodela), Ciona 



intestinalis, Clavelina lepadiformis (Ascidiacea) 

 LOHMANN, K. Dr.rer.nat. - Zool. Inst, der Univ., Weyertal 1 19, 5 KOLN 41, B.R.D. (Germany) 

 a Cytochemistry and biochemistry of gene amplification connected with differentiation processes 



in early development. Triturus vulgaris (Urodela) 

 b Generation time and changes in the cell cycle of embryonic cells. Same species as a 

 LOMBARD (DES GOUTTES), Mrs. M. N. Dr.es Sci. - Unite de Physiol. Cell., INSERM, Inst, du 



Radium, Batiment 110, 91405 ORSAY, France 

 a Induction of kidney tubules in metanephrogenetic mesenchyme. Mus musculus, Rattus 



norvegicus (Rodentia) 

 b In vitro response of fetal Leydig cells to purified follicle stimulating hormone; loss of this 



response during postnatal development in relation with maturation of hypothalamic neurones 



controlling the secretion of interstitial cell stimulating hormone. Same species as a 

 c Steroidogenetic cells in developing ovary (cytology, light and electron microscopy, histochem- 

 istry of A r -30-hydroxysteroid dehydrogenase). Mus musculus (Rodentia) 

 d Factors affecting in vitro 3 H-thymidine uptake by embryonic and postembryonic hepatic cells. 



Rattus norvegicus (Rodentia) 

 LONNING (VADER), Mrs. S. Dr.phil. - Inst, of Biol, and Geol., Univ. of Tromso, 9001 TROMSO, 



Norway 

 a The effect of drugs and environmental factors on development and morphogenesis (experimental 



study; electron microscopy). (Echinoidea), marine spp. (Teleostei) 

 LOPASHOV, G. V. Dr.biol.sci., Prof. - Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 



Vavilov St. 26, MOSCOW 1 17334, U.S.S.R. ISDB 



a Inductive interactions of the cells in differentiating retina by means of combinations of cells of 



the eye rudiment and the gastrula ectoderm. Rana temporaria (Anura) (with O. A. HOPER- 



SKAYA) 

 b Metaplastic potencies of embryonic and larval eye for lens and retina regeneration. Anoptichthys 



jordani (Teleostei) (with A. A. SOLOGUB) 

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



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

 d Determination of the site of formation of the falciform process by means of creation of 



61 



