OGAWA, T. D.Sc. — Research Inst, of Environmental Med., Nagoya Univ., Furo-cho, 



Chikusa-ku, NAGOYA, Japan 

 a Comparative study of the proceeding of development in different strains and species of 



laboratory animals. Miis musctihis. Rattus norvegicus (Rodentia) (in collaboratio" with 



U. MURAKAMI) 

 OGREN, R. E. Ph.D. — Dept. of Biol., Wilkes Coll., WILKES-BARRE. Pa. 18703, U.S.A. 

 a Embryonic development (maturation, cleavage). Hymenolepis diminuta (Cyclophyllidae. 



Cestodes) 

 b Structure and development of hexacanth embryos (oncospheres). Hymenolepis diminuta 



(Cyclophyllidae, Cestodes) 

 c Differentiation of hooks in oncoblasts of immature embryos. Hymenolepis diminuta 



(Cyclophyllidae, Cestodes) 

 d Differentiation and movement of embryonic myoblasts. Hymenolepis diminuta (Cyclo- 

 phyllidae. Cestodes) 

 OHASHI, T. M.Sc. — Dept. of Anat.. School of Med., Mie Prefectural Univ., 100. Torii-Cho, 



TSU, Japan 

 a Developmental mechanism of the central and peripheral nervous system. Hynobius nebulo- 



sus (Urodela) 

 OHMORI, K. — Research Inst, of Environment. Med., Nagoya Univ., Furo-cho, Chikusa-ku, 



NAGOYA, Japan 

 a Effects of some external agents upon the regiona'l differentiation of the vertebrae. Mus 



musculus (Rodentia) (in collaboration with Y. KAMEYAMA and U. MURAKAMI) 

 OHNO, S. Ph.D., D.Sc — Dept. of Biol., City of Hope Med. Center. 1500 East Duarte 



Road, DUARTE, Calif. 91010, U.S.A. 

 a Oogenesis. Mus musculus, Microtus oregoni (Rodentia), Bos taurus (Artiodactyla) 

 b Embryonic blastema for somatic elements of the gonad. Epitatretus stoutii (Cyclostomata), 



Salmo irideus (Teleostei), Lepus californicus (Lagomorpha), Peromyscus maniculatus 



(Rodentia), Bos taurus (Artiodactyla) 

 OHSAKI, K. — Biol. Inst.. Fac. of Sci., Univ. of Kanazawa, Marunouchi -1, KANAZAWA, 



Japan 

 a Development of egg. Dugesia japonica (Turbellaria) 

 b Reaggregation of dissociated cells. Callyspongia elongata (Podfera) 

 OJEDA SAHAGUN. J. L. Dr.en Med. — Servicio de Embriol. Exper., Dept. Anat. Prof. 



Dr. P. Gomes Bosque, Fac. de Med., VALLADOLID, Spain 

 a Biochemical and ultrastructural effects of barbituric compounds on the embryo. Gallus 



domesticus (Aves) 

 h Effect of peripheric innervation area on cellular kinetics in the CNS (autoradiography). 



Gallus domesticus (Aves) 

 OJIMA, Y. D.Sc, Prof. — Dept. of Biol., Fac of Sci., Kwansei Gakuin Univ., Uegahara 1, 



NISHINOMIYA, Hyogo-ken, Japan 

 a Developmental genetics of fresh-water forms. Carassius auratus, Cyprinus carpio (Tele- 

 ostei) 



• OKA, H. Ph.D., Pror. (Emer.) — Inst, of Zool., Fac. of Sci.. Tokyo Kyoiku Univ., 



Otsuka 3-29-1, Bunkyo-ku, TOKYO, Japan 

 OKADA, M. Ph.D. — Inst, of Zool., Fac. of Sci., Tokyo Kyoiku Univ.. Otsuka 3-29-1. 



Bunkyo-ku. TOKYO, Japan 

 a Electron microscopical and biochemical analyses of embryonic diapause. Bombyx mod 



( Lepidoptera) 



• OKADA. T. S. D.Sc, Prof. — Lab. of Developmental Biol., Zool. Inst., Fac. of Sci., 



Univ. of Kyoto, KYOTO, Japan 

 a Immunological studies on the synthesis of tissue proteins in embryos. Gallus domesticus 



(Aves) 

 b Growth and differentiation of undetermined embryonic cells in vitro. Gallus domesticus 



(Aves) (in collaboration with K. WAT AN ABE) 

 c Cellular interactions between normal and neoplastic cells in myeloma cultured in vitro. 



Mus musculus (Rodentia) (in collaboration with I. NAKAMURA) 

 OKADA, Y. M.D. — Dept. of Zool., Biol. Sci. Div., Univ. of Chicago, 1101 East 57th St., 



CHICAGO, 111. 60637, U.S.A. 

 a Morphological and functional modifications of retinal cells (from 7- to 10-day embryos) 



in monolayer culture. Gallus domesticus (Aves) 



• OKADA, Y. K. Dr., Prof. (Emer.) — Div. of Zool., Natl. Science Museum, Ueno Park. 



Daito-ku. TOKYO, Japan 

 a Origin and fate of bisexual gonad. Epinephelus fasciatus, Sacura margadtacea (Serra- 



nidae), Mylio macrocephalus, Tainus tumiformis, Chrysophrys major (Spaddae). Inegocia 



meerdecvoorti (Platycephalidae, Teleostei) 

 b Secondary sex characters. Xiphophorus helled, Lebistes reticulatus, Gambusia affinis, 



Oryzias latipes (Cyprinodontidae) , Halichoeres poecilopterus, Anampses cuvied, Semi- 



cossyphus reticulatus, Thalassoma cupido (Labddae), Sacura margaritacea, Epinephelus 



septemfasciatus (Serranidae, Teleostei) 



113 



