OKSCHE, A. Dr.med., Prof. — Anat. Inst, der Univ. Giessen, Friedrichstr. 24, 63 GIESSEN, 



W.Germany 

 a Vergleichende Studien iiber die Entwicklung, cytologische Differenzierung, Cytodynamik 



und Funktion der Epiphyse und des Subcommissuralorgans; Potenzen des Neuralrohre- 



pithels und ihre Realisierung. Typische Vertreter aller Klassen (Vertebrata) 

 OKUNO, Y. — Dept. of Biol., Osaka Kyoiku Univ., Tennoji-ku, OSAKA, 543 Japan 

 a Differentiation of neoblasts. Dugesia japonica (Turbellaria) 

 b Effect of x-irradiation on blastema. Same species as a 



OLIVEREAU, Miss M. M. A. Dr.es Sci. — Lab de Physiol., Inst. Oceanogr., 195 rue Saint- 

 Jacques, 75 PARIS Ve, France 

 a Cytology and histochemistry of endocrine glands in relation with development, and after 



various experimental procedures. (Salmonidae, Teleostei) 

 b Pituitary grafting. Mollienesia formosa (Cyprinodontidae, Teleostei) 

 c Histophysiology of endocrine glands. Anguilla anguilla (Anguillidae, Teleostei) 

 d Hypophyseal-adrenocortical relationships, with chemical inhibitors, using histological 



techniques. (Salmonidae; Anguillidae; Poeciliidae, Teleostei) 

 e Histophysiology of the pituitary gland in immature and mature animals, in correlation 



with osmoregulatory processes. Mugil auratus (Teleostei) 

 OLIVERO, M. Dr. — Inst, of Exp. Embryol., Univ. of Turin, Via Giolitti 34, 10123 



TORINO, Italy 

 OLIVO, O. M. Prof. — 1st. di Anat. Umana Norm., Univ. di Bologna, Via Irnerio 48, 



BOLOGNA, Italy • 



ONUMA, H. Ph.D. — Coll. of Vet. and Anim. Sci., Kitasato Univ., TOWADI-shi, Aomori, 



034 Japan 

 OOISHI, Miss S. D.Sc. — Hamajima Marine Biol. Station, c/o Fac. of Fish., Pref. Univ. of 



Mie, 158 Edobashi 2-chome, TSU, Mie Pref., 514 Japan 

 a Postembryonic development. (Notodelphyidae, Copepoda) 

 OOSTROM, C. G. van M.D. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, 



AMSTERDAM-O., Netherlands 

 a Differentiation of germ layers. (Mammalia) (with C. D. A. VERWOERD) 

 OPPENHEIM, R. Ph.D. — Neuroembryol. Lab., North Carolina Dept. of Mental Health, 



Dorothea Dix Hosp., Box 7532, RALEIGH, N.C. 27611, U.S.A. 

 a Neural and behavioural aspects of embryonic development (behavioural observations, 



microsurgery). Gallus gallus, Anas platyrhynchos, Columba livia (Aves) 

 b Autoradiography of brain and spinal cord using tritiated thymidine for study of mitotic 



activity just prior to, and after hatching. Gallus gallus, Columba livia (Aves) 

 c Early embryonic transplantation of brain and sense organs between species. Gallus gallus. 



Anas platyrhynchos, Coturnix coturnix (Aves) 

 d Preliminary investigation of neural and behavioral development in pouch-youngs. Didelphis 



virginiana (Marsupialia) 

 OPPENHEIMER, Miss J. M. Ph.D., Prof. — Dept. of Biol., Bryn Mawr Coll. BRYN 



MAWR, Pa. 19010, U.S.A. • 



a Grafting of reaggregated cells from portions of the embryonic shield. Fundulus heteroclitus 



(Teleostei) 

 O'RAHILLY, R. M.D., Prof. — Dept. of Embryol., Carnegie Inst, of Washington, 115 



W.University Parkway, BALTIMORE, Md. 21210, U.S.A. • 



a Early development (stages 1 to 9). Homo sapiens (Primates) 

 b Prenatal and postnatal growth of eye. Same species as a 

 ORLOVA, Mrs. I. I. Cand.biol.sci. — . Lab. of Embryol., Inst, of Human Morphol., Acad, of 



Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW 125315, U.S.S.R. 

 a Correlation between cell death and cell division in lung, liver, and brain during embryo- 

 genesis. Rattus norvegicus (Rodentia) 

 b Humoral interconnections between analogous organs (lung, brain) of mother and foetus. 



Same species as a 

 ORNOY, A. M.D. — Dept. of Embryol. and Teratol., Tel-Hashomer Hosp., TEL-AVIV, 



Israel 

 ORR, C. W. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W.University Park- 

 way, BALTIMORE, Md. 21210, U.S.A. 

 a Animal viruses (esp. tumor viruses) as tools in studying embryonic development. Gallus 



gallus (Aves) (with J. D. EBERT and J. RASH) 

 ORSINI, Mrs. M. W. G. Ph.D. — Dept. of Anat.. Bardeen Med. Labs., Univ. of Wisconsin, 



MADISON, Wis. 53706, U.S.A. • 



a Fetal membranes, giant cells, and pregnancy changes in uterine vessels. Mesocricetus 



auratus (Rodentia) 

 b Factors controlling implantation and loss of zona pellucida. Mesocricetus auratus, Rattus 



norvegicus, Mus musculus, Cavia porcellus (Rodentia), Mustela putorius, M. vison 



(Carnivora) 

 c Decidualization during pregnancy and pseudopregnancy. Same species as b 

 d Factors controlling life of corpora lutea. Same species as a 

 e Immunological aspects of decidualization. Same species as a 



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