Nikitina-O'br 



a. Nuclear transplantation from the gastrula ectoderm, neural plate, eye 

 rudiment and early endoderm. Rana arvalis (Anura) (in collaboration 

 with Miss O. G. STROEVA) 

 NILSSON, S. Med.lic. — Dept. of Anat, Univ. of Goteborg, G6TEBORG 

 SV, Sweden 

 a. Development of the seminal vesicle. Homo sapiens (Primates) 

 NISHIITSUTSUJI— UWO, Mrs. J. D.Sc — Lab. of Embryol. and Exper. 

 Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ., KYOTO, Japan 

 a. Hormonal mechanism of metamorphosis. Bombyx mori, Luehdorfia japo- 

 nica, Philosamia cynthia ricini (Lepidoptera) (in collaboration with M. 

 ICHIKAWA) 

 NISHIMURA, H. M.D. — Dept. of Anat., Kyoto Univ., Sakyo-ku, KYOTO, 

 Japan 



a. Various factors which control the action of some teratogenic agents. Mus 

 musculus (Rodentia) 



b. Developmental variations and deformities in early embryos. Homo sapiens 

 (Primates) 



c. Relationship between development and ageing. Mus musculus (Rodentia) 

 NISSEN, Th. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, Kunst- 



lergasse 16, ZURICH, Schweiz 

 NIU, M. C. Ph.D., M.I.I.E. — Biol. Dept., Temple Univ., PHILADELPHIA 



22, Pa., U.S.A. 

 NIWELINSKI, J. M. Ph.D. — Dept. of Exper. Zool., Polish Acad, of Sci., 



ul. Kopernika 7, KRAK6W, Poland 



a. Enzymatic background of the regeneration process. Triturus spec, Xeno- 

 pus laevis (Amphibia) (in collaboration with Miss L. ZAMORSKA) 



b. jS-glucuronidase activity in transplanted regeneration blastemas. Ambys- 

 toma spec. (Urodela) (in collaboration with Miss L. ZAMORSKA) 



NOBILI, R. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, 

 Italia 

 a. Reproduction and cytology. (Ciliata) 

 NOLTE, H. v. d. V. B.Sc. — Dept. of Zool., Fac. of Sci., Univ. of Pretoria. 

 PRETORIA, Republic of South Africa 

 a. An experimental investigation of the influence of epidermal placodes on 

 the development of the cranial nerves. Xenopus laevis (Anura) 

 NONAKA, T. B.M., M.D. — Inst, of Endocrinol., Gunma Univ., Iwagami- 



cho, MAEBASHI, Japan 

 NONNENMACHER, Miss J. — Lab. de Zool. exper., Fac. des Sci., 16 Quai 

 CI. Bernard, LYON, France 

 a. Etude autoradiographique du metabolisme des acides nucleiques. Caeno- 

 rhabditis elegans (Nematoda) 

 NORBERG, O. V. O.Dr., Prof. — Dept. of Histol., Karolinska Inst., Solna- 

 vagen 1, STOCKHOLM 60, Sweden 

 a. A study of teeth and jaws during the first years of life. Homo sapiens 

 (Primates) 

 NORMAN, C. Ph.D. — Dept. of Biol., W. Virginia Univ., MORGAN- 

 TOWN, V.Va., U.S.A. 



a. The intracellular distribution of sulfhydryl groups in embryonic, adult 

 and tumorous tissues. Rana pipiens (Anura) 



b. Effects of pH on the metabolism and fertilizing capacity of spermatozoa 

 cultured in vitro. (Mammalia) 



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