MUSMECI, Miss M. T. Ph.D. 1st. di Istol. ed Embryol., Univ. di Palermo, Via Archirafi 20, 90123 



PALERMO, Italy 

 a Reticulocyte maturation in the embryo. Callus spec. (Aves) 

 MUSY, J. P. M.D. - Inst. d'Histol. et d'Embryol. Gener., Univ. de Fribourg, 1 rue Gockel, 1700 



I RIBOURG, Switzerland 

 a Cytophotometry on embryonic fibroblasts: DNA content as a function of oxygen concentration. 



Gallus domesticus (Aves) 

 MUTOLO, V. M.D. - 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, 



Italy ISDB 



a Cell interaction in embryos. Paracentrotus lividus (Echinoidea) 

 b Ribosomal RNA synthesis in cmbryogenesis. Same species as a 



c RNA synthesis in regenerating liver, especially mitochondrial RNA. Rattus spec. (Rodentia) 

 MYSTKOWSKA-BACZKOWSKA, Mrs. E. T. Dr.biol. - Dept. of Exper. Embryol., Inst, of Obstet. 



and Gynecol., Medical Academy, Karowa 2, 00-315 WARSZAWA, Poland 

 a The interdependence between somatic and germinal tissues of the gonad in experimentally 



obtained chimaeras. Mus museums (Rodentia) 

 b Embryonic development. Clethrionomys glareolus (Rodentia) 

 NAAKTGEBOREN, C. Dr. - Dept. of Obstet. and Gynecol., Univ. of Amsterdam, Wilhelmina 



Gasthuis, AMSTERDAM, Netherlands 

 a Foetal growth as a dependent of placental size and uterine characteristics. Ovis aries 



(Artiodactyla), Rattus spec. (Rodentia) and other Mammalia 

 b Electrophysiology of the uterus in the perinatal period, studied in vivo. Canis familiaris 



(Carnivora), Ovis aries (Artiodactyla), Oryctolagus cuniculus (Lagomorpha) 

 NADAL, CI. Dr.en Med., Dr.es Sci. - Unite de Physiol. Cell., INSERM, Inst, du Radium, Batiment 



110, 91405 ORSAY, France 

 a Substances regulating the number of hepatic cells during life and the regeneration after partial 



hepatectomy. Rattus norvegicus (Rodentia) 

 b Hepatic polyploidy, its development during life and its control system. Rattus norvegicus 



(Rodentia) 

 NAGEL, J. D.Sc. - Lab. de Physiol. Anim., Univ. de Reims, B.P. 347, 51062 REIMS Cedex, France 

 a Hemopoietic function of the foetal liver; factors controlling its progressive disappearance. Rattus 



norvegicus (Rodentia) (with R. L. JACQUOT) 

 NAMUR, Miss P. D.E.A. - Lab. d'Embryol., Dept. de Biol.-Ecol., U.E.R. de Sci., Univ. de Caen, 



14032 CAEN, France 

 a Expression des specificites interspecifiques et action de facteurs specifiques sur les stades 



embryonnaires precoces. Triturus alpestris, T. palmatus, Ambystoma mexicanum (Urodela) 

 NANJUNDIAH, V. Ph.D. - Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 1, Universiteits- 



centrum 'De Uithof , UTRECHT, Netherlands 



- From Jan. 1974: Friedrich-Miescher Lab. der Max-Planck Gesellschaft, Spemannstr. 37-39, 



Postfach 2109, 74 TUBINGEN, B.R.D. (Germany) 

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



experiments. (Acrasiales; Amphibia) 

 NARDI, Miss I. Dr.Biol.Sci. - Chair of Histol. and Embryol., Univ. of Pisa, Via A. Volta 4, 56100 



PISA, Italy 

 a Mitotic and lampbrush chromosomes, especially RNA/DNA hybridization. Triturus spp. (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. Callinectes sapidus, Macropipus spec. (Decapoda, Crustacea) 

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



Czechoslovakia 

 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 F. SLADECEK) 

 NEEDHAM, A. E. D.Sc. - Dept. of Zool., Univ. of Oxford, South Parks Rd., OXFORD OX1 3PS, 



England 

 a Beryllium chloride and regeneration. Polycelis nigra (Turbellaria) 



NEEDHAM, J. Dr., Prof. (Emer.) - GonvUle and Caius Coll., CAMBRIDGE, England ISDB 



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) 



(with W. 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 - Lab. de Bot., Univ. de Provence, Centre St. Charles, Place Victor 



Hugo, 13003 MARSEILLE, France 

 a Experimental morphology of pinnate leaves: 1. prevention of division of leaflet primordia by 



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