a Etude experimentale de Taction d'antimetabolite au cours du developpement precoce du germe. 



Ambystoma mexicanum (Urodela) 

 NANJUNDIAH, V.; Ph.D. - Biozentnim der Univ. Basel, Klingelbergstr.70, 4056 BASEL, Switzerland 

 a Models for control of development at the multicellular level; theoretical study combined with 



experiments. (Acrasiales; Amphibia) 

 NARDI, Mrs. I.; Dr.Biol. - Inst, of Histol. and Embryol., Univ. of Pisa, Via A.Volta 4, 56100 PISA, 



Italy 

 a Mitotic and lampbrush chromosomes; DNA analysis and in situ RNA/DNA hybridization 



(Urodela) 

 NAVARATNAM, V.; Ph.D. - Anat. School, Univ. of Cambridge, Downing St., CAMBRIDGE 



CB2 3DY, England 

 a Ontogenesis of cholinesterase and mono-amine activity in cardiac innervation (Mammalia), 



Homo sapiens (Primates) 

 b Ultrastructure of the yolk sac. Homo sapiens (Primates) 



NAYLOR, E.; Ph.D., Prof. - Dept. of Marine Biol., Univ. of Liverpool, PORT ERIN, Isle of Man, U.K. 

 a Developmental aspects of behaviour. Carcinus maenas, Callinectes sapidus, Macropipus spec. 



(Decapoda, Crustacea) 

 NEDVfDEK, J.; RNDr. - Dept. of Exp. ZooL, Charles Univ., Vinicna 7, 12844 PRAHA 2, Czechoslo- 

 vakia 

 a Nucleic acids and subcellular particles in oogenesis and early development. (Amphibia) (with 



V. HABROVA) 

 b Transplantation of nuclei in relation to nucleic acids. (Amphibia) (with P. SLADECEK) 

 NEEDHAM. A. E.; D.Sc. - Dept. of Zool., Univ. of Oxford. South Parks Rd.. OXFORD 0X1 3PS, 



England 

 a Review of regeneration and general metabohsm „ 



NELSON, L.; Fil.kand. - Dept. of Zoophysiol., Univ. of Umea, 901 87 UMEA, Sweden 

 a Cell transformation and cell differentiation; regulation of DNA synthesis. Xenopus laevis, Rana 



spp. (Anura) 

 NEUBERT, J.; Dr.rer.nat. - Inst, fur Flugmedizin der DFVLR, Kolnerst. 70, 53 BONN-Bad 



Godesberg, B.R.D. (Germany) 

 a Effect of simulated weightlessness on ultrastructure of the embryonic vestibular organ. (Anura) 



(withW. BRIEGLEB) 

 b Teratogenic and genetic anomalies induced by simulated weightlessness (fast running clinostat). 



Tribolium confusum (Coleoptera) (with W. BRIEGLEB) 

 NEUMANN, D.; Dr.rer.nat., Prof. - Zool. Inst, der Univ., Weyertal 119, 5 KOLN 41, B.R.D. 



(Germany) 

 a Lunar periodicity of metamorphosis. Clunio marinus (Chironomidae, Diptera) 

 NEVILLE, P. A. J.; Dr.d'Etat, Prof. - Lab. de Morphogen. Vcget., Univ. d'Ai.x-Marseiile III, Centre 



St-Charles, place Victor Hugo, 13331 MARSEILLE Cedex 3, France 

 a Experimental morphology of pinnate leaves: 1. leaf regeneration following bipartition of primor- 



dium in different planes; 2. apical dominance due to young expanding leaves; effect of culture 



conditions, cytological changes. Gleditsia triacanthos (Leguminosae) 

 b Determination on flower bilateralitv (microsurgical method). Pisum sativum (Leguminosae) 

 NEW, D. A. T.; Ph.D. - Marshall Lab., Dept. of Physiol., Univ. of Cambridge, Downing St., 



CAMBRIDGE CB2 3EG, England 

 a Development of methods for growing embryos in culture. Didelphys spec. (Marsupialia), Rattus 



spec, Mus musculus (Rodentia) and others (Mammalia) 

 b Growth and differentiation of the placenta. (Rodentia) 

 c Teratogenic effects of hyperthermia 



NEWTH, D. R.; Ph.D., Prof. - Dept. of ZooL, Univ. of Glasgow, GLASGOW G12 8QC, Scotland, U.K. 

 a Properties of primordial germ cells. Xenopus laevis (Anura) 

 b Transplantation immunobiology. Same species as a 

 NEYFAKH, A. A.; Dr.bio!., Prof. ~ Lab. of Biochem. Embryol., Inst, of Devi Biol., Acad, of Sci. of 



the USSR., Vavilov St. 26, MOSCOW 117334, U.S.S.R 

 a Distribution of RNA, synthesized during maturation, between the nucleus and cytoplasm of early 



embryo. Misgurnus fossihs (Telcostei) (with A. A. KOSTOMAROVA, M. N. SKOBLINA, and 



A. V. KOTOMIN) 

 NICOLAS, P. B. G.; Dr. - Dept. de Biol. Gen. et Appl., Univ. de Lyon I, 43 Bd. du 11 Novembre 



1918, 69621 VILLEURBANNE, France 

 a Genetics of chloroplast development mutants. Euglena gracihs (Euglenophyceae) 

 NICOLET, G.; D.Sc. Lab. d'Embrvol. Expcr., Inst. d'HistoL, Univ. de Geneve, 20 rue de I'Ecole de 



Medecine, 1211 GENtVE 4, Switzerland 

 a Subcellular changes during early morphogenesis. Gallus domesticus (Aves) (with J. GALLERA) 

 NICOTRA, Miss A.; Dr.biol.sci. - 1st. di Zool. "Federico Raffaele", Viale deH'Universita 32, 00161 



ROMA (7), Italy 

 a Interactions between mitochondrial transcription and early embryonic differentiation. Para- 



centrotus lividus (Echinoidea) 

 b Nuclear protein changes during spermatogenesis. Same species as a (with E. De MAITHAEIS) 

 NIL, C. J. van; D.V.M. - Lab. of Anat. and Embryol., Free Univ., v.d. Boechorststr. 7, AMSTER- 



DAM-Z. Netherlands 

 a Ontogenetic malformations of the heart. Sus scrofa. Bos taurus (Artiodactyla) 

 b Pathological development of heart and vessels. Same species as a 

 c Patliological development of bone. Sus scrofa (Artiodactyla) 

 d Teratology. (Mammalia), Homo sapiens (Primates) 



75 



