b Croissance prenatale globale. Homo sapiens (Primates) (en collaboration 

 avec H. PINEAU) 



OLIVO, O. M. M.I. I.E., Prof. — 1st. di Istol. e Fisiol. gen., Univ. di Bolog- 

 na. Via Belmeloro N. 8, BOLOGNA. Italia 



OLSSON. R. Fil.Dr. — Zootom. Inst., Univ. of Stockholm, 70A Radmans- 

 gatan. STOCKHOLM, Sweden 



a. Development of nuclei and fibres in the brain. Polyptetus spec. (Bra- 

 chiopterygii) 



b. Development of Reissner's fibre and the infundibular and subcommissural 

 organs. Branchiostoma spec. (Cephalochordata) , ("several Vertebrata) 



c. Development of the epithalamus. (Brachiopterygii) 



OMODEO. P. Dr.Sci. — 1st. di Biol, e Zool. gen., Fac. di Med., Piazza 



S. Agostino 4, SIENA. Italia 



(no embryological work in progress) 

 OOTA, Y. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chigusa-Ku, NAGOYA, 



Japan 

 a. Physiology and biochemistry of microsomal ribonucleoproteins in ger- 

 minating bean seeds. (Leguminosae) (in collaboration with K. TA- 



KATA) 

 OPPENHEIMER, Miss J. M. B.A., Ph.D., M.I. I.E. — Dept. of Biol., Bryn 



Mawr Coll., BRYN MAWR, Pa., U.S.A. 

 a. Differentiation of extra-embryonic grafts. Fundulus heteroclitus (Teleos- 



tei) 

 O'RAHILLY, R. M.Sc. f M.D., Prof. — Dept. of Anat., Coll. of Med., 



Wayne State Univ., DETROIT 7, Mich., U.S.A. 

 a. Morphogenesis and developmental histochemistry of embryonic eye. 



Gallus domesticus (Aves) (in collaboration with D. B. MEYER) 

 ORSINI Mrs. M. C. WARD B.A., Ph.D. — Dept. of Anat., Bardeen Med. 



Labs., Univ. of Wisconsin, MADISON 6, Wis., U.S.A. 



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

 Mesocricetus auratus (Rodentia) 



b. Delayed implantation. Mesocricetus auratus (Rodentia) 



ORSKA, Miss J. Ph.D. — Zaklad Anat. Porownawczej, Inst. Zool. Uniw., 



ul. Sienkiewicza 21, WROCLAW, Poland 

 ORTOLANI, Miss G. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, 



Italia 

 a. Induction processes in embryonic development. (Ascidiae, Urochordata) 

 ORTS LLORCA, F. M.I. I.E., Prof. — Lab. de Anat. y Embryol., Fac. de 



Med., Ciudad Univ., MADRID, Spain 



a. Microphthalmie experimentale. Gallus spec. (Aves) 



b. Production des "retinal septa". Gallus spec. (Aves) 



OSAWA, S. M.A. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chigusa-Ku, 

 NAGOYA, Japan 



a. Test of the inductive effect of solutions of RNA's prepared from various 

 tissues on the isolated ectoderm. (Urodela, Mammalia) (in collaboration 

 with T. YAMADA) 



b. Ribonucleic acid and protein in the differentiation of the gametophyte. 

 Dryopteris erythrosora (Pteridophyta) 



O'STEEN, W. K. B.A., M.S., Ph.D. — Dept. of Anat., Med. Branch, Univ. 

 of Texas, GALVESTON, Tex., U.S.A. 



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