a. Study of ultrastructural and functional differentiation of the epithelial 

 cells of the choroid plexus. Gallus domesticus (Aves) 



b. Consideration of role of tissue interactions in histogenesis of the central 

 nervous system. Gallus domesticus (Aves) 



c. Study of proliferation control mechanisms, especially in regard to the cen- 

 tral nervous system. Gallus domesticus (Aves) 



d. Study of effect of in vitro storage on DNA stability in spermatozoa. 

 Bos taurus (Artiodactijla) 



BISHOP. D. W. Ph.D. — Dept. of Embryol.. Carnegie Inst, of Washington. 

 1 15 W. University Parkway, BALTIMORE 10, Md., U.S.A. 



a. Contractile protein and contractile mechanisms of spermatozoa. (Mamma- 

 lia) 



b. Development of immunologic capacity. Cavia spec. (Rodentia) 



c. Immunologic impairment of spermatogenesis. Cavia spec. (Rodentia) 

 BISHOP, M. W. H. M.A., Ph.D. — Dept. of Animal Husbandry, Univ. of 



Bristol, Langford House, Langford, BRISTOL, England 

 a. Investigations on gametes, gametogenesis, fertilization and early develop- 

 ment. (Mammalia) 

 BLACK, R. E. B. A., Ph.D., Prof. — Dept. of Biol., Coll. of William and Mary, 

 WILLIAMSBURG, Va., U.S.A. 



a. Use of isotopes to trace metabolic pathways in embryos, f marine Everte- 

 brata) 



b. Development of enzymes related to Krebs cycle in embryos, ('marine 

 Evertebrata) 



BLACKLER, A. W. C. B.Sc, Ph.D., Prof. — Station de Zool. exper., Univ. 

 de Geneve, Route de Malagnou 154, Chene-Bougeries, GENEVE, Suisse 



a. Transplantation of germ-cells using a cytological "marker". Xenopus 

 laevis (Anura) 



b. Transplantation of germ-cell nuclei into enucleated eggs. Xenopus laevis 

 (Anura) 



c. Genetical analysis of somatic nuclei after nuclear transfer. Xenopus laevis 

 (Anura) 



BLANDAU, R. J. Ph.D., M.D. — Dept. of Anat., School of Med., Univ. of 

 Washington, SEATTLE 5, Wash., U.S.A. 



a. Mechanisms of ovulation. 



b. Mechanisms of implantation. 



c. Tissue culture of granulosa cells. 



d. Primordial germ cells. Mus spec, Cricetus spec, Cavia spec. (Rodentia) 

 BLECHSCHMIDT, E. Dr.med., o.o.Prof. — Anat. Inst, der Univ., Kreuz- 



bergring 36, G5TTINGEN, Deutsche Bundesrepublik 

 BLOCK, M. H. Ph.D., M.D., Prof. — Univ. of Colorado Med. Center, 

 4200 E. 9th Ave., DENVER 20, Colo., U.S.A. 



a. Development of blood-forming tissues. Didelphys virginiana (Marsu- 

 pialia) 



b. Effect of irradiation on development of blood-forming tissues. Didelphys 

 virginiana (Marsupialia) 



c Iron metabolism of blood-forming tissues. Didelphys virginiana (Marsu- 

 pialia) 



d. Wound healing of blood-forming tissues. Didelphys virginiana (Marsu- 

 pialia) 



21 



