NIKOLSKAYA, Miss I. S. Cand.biol.sci. — Lab. of Developm. Biophys., Inst, of Developm. 



Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St.. MOSCOW V-133, U.S.S.R. 

 NILSSON, E. I. Y. Phil.kand. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA, 



Sweden 

 a Determination of cortical tension in oocytes and eggs. (Amphibia) 



NILSSON, J. R. Dr. — Biol. Inst, of the Carlsberg Found., Tagensvej 16, 2200 COPEN- 

 HAGEN N., Denmark 

 a Electron microscopic study of cell regeneration after short exposure to unfavourable con- 

 ditions. Tetrahymena pyriformis (Ciliata) 

 NILSSON, S. B. Phil.mag. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA, 



Sweden 

 a Carbohydrate metabolism in very young embryos. Rana spp. (Anura), Gallus domesticus 



(Aves) (in collaboration with S. LGVTRUP) 

 NISHIMURA, H. M.D., Prof. — Dept. of Anat., Kyoto Univ., Yoshida, Konoe-cho, Sakyo- 



ku, KYOTO 606, Japan 

 a Modification of susceptibility to teratogenesis. Mus musculus (Rodentia) 

 b Tests on drug teratogenicity. Macaca fuscata (Primates) 

 c Anomalies in early embryos and maternal factors. Homo sapiens (Primates) 

 NISHIOKA, Miss M. D.Sc. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higashisenda-cho, 



HIROSHIMA, Japan 

 a Synthesis of amphidiploids. (Ranidae, Anura) 



h Synthesis of nucleo-cytoplasmic hybrids between different species. (Ranidae, Anura) 

 NISHIZU, K. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chome, 



Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan 

 a Myotube formation in cultured cells. Gallus domesticus (Aves) 



NIU, M. C. Ph.D., Prof. — Dept. of Biol.. Temple Univ.. Broad and Berks St., PHILA- 

 DELPHIA, Pa. 19122. U.S.A. • 

 NIXON, D. A. Ph.D. — Physiol. Dept., St. Mary's Hosp. Med. School, Paddington, 



LONDON W.2, England 

 a Perfusion of the isolated foetus. Ovis aries (Artiodactyla) 

 b Development of renal function. Ovis aries (Artiodactyla) 

 NJEUMA (EFFANGE), Mrs. D. L. Sc.B. — Dept. of Zool. and Comp. Anat., Univ. Coll. 



London, Gower St., LONDON W.C.I, England 

 a The effects of cell density on mitosis in tissue culture. Gallus gallus (Aves), Mus musculus 



(Rodentia) 

 NOGAMI, H. M.D. — Dept. of Orthopaedic Surg., School of Med., Nagoya Univ.. 65 



Tsuruma-cho. Showa-ku, NAGOYA, Japan 

 a Digital malformations in the fetus caused by X-irradiation. Mus musculus (Rodentia) 

 h Limb and digital malformations in the fetus caused by excessive vitamin A. Mus musculus 



(Rodentia) 

 c The development of congenital spinal malformations induced by administration of 6-AN 



(6-aminonicotinamide), studied by means of periodic roentgenographic and histological 



examination until 360 days after birth. Mus musculus (Rodentia) 

 NOLL, F. Dr.med. — Inst, fiir ZellphysioL. Deutsche Akad. der Wissensch. zu Berlin, 



Lindenberger Weg 70, 1115 BERLIN-Buch, East.Germany 

 NONAMI, Y. Dr.Agric, Prof. — Dept. of Biochem. and Technol. of Anim. Products, Fac. 



of Agric, Univ. of Niigata, 106, Koganecho. NIIGATA, 950 Japan 

 a Lysozyme of incubated egg white. Gallus domesticus (Aves) 

 h Nucleic acids of yolk and white of the incubated egg; fate of sugar-nucleotides during 



incubation. Gallus domesticus (Aves) 

 N0RBAEK S0RENSEN, I. — Finsen Lab., Finsen Inst., 49 Strandboulevard. DK-2100 



COPENHAGEN, Denmark 

 a Cell kinetics and folHcle growth after a single injection of testosterone propionate in in- 

 fancy (^H-thymidine labeUing and autoradiography). Mas musculus (Rodentia) 

 NORD, L. M.D. — Tornblad-Inst. for Comp. Embryol., Biskopsgatan 7, LUND, Sweden 

 a Brain differentiation studied with immunofluorescence. Gallus domesticus (Aves), Mus 



musculus (Rodentia) 

 b Monamine development in the nervous system. Gallus domesticus (Aves) (in collaboration 



with L. HAKANSSON) 

 NORMAN, C. Ph.D., Prof. — Dept. of Biol., West Virginia Univ., MORGANTOWN, 



W.Va. 26506, 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 i n 



vitro. (Mammalia) 

 c Effects of light on spermatozoa. (Mammalia) 

 d Physiology and biochemistry of germ cells. (Mammalia) 

 e Physiological and biochemical basis of cell senescence, 

 f TTie effect of sterols on growth and development of sexuality. Phytophthoca cactorum 



(Fungi) 



128 



