BIELAfiSKA (OSUCHOWSKA), Mrs. Z. Dr., Prof. — Dept. of Histol. and Embryol., 



Warsaw Agric. Univ., ul. Grochowska 272, WARSZAWA, Poland 

 a Histochemistry of gonad differentiation. Sus domesticus (Artiodactyla) and other spp. 



(Vertebrata) 

 BIERNE, J. Dr.es Sci. — Lab. de Biol. Cell., Fac. des Sci., B.P. 347, 51 REIMS, France 

 a Endocrine and genetic factors in sex differentiation and maturation. (Nemertea) 

 b Origin of regeneration cells. (Nemertea) 

 c Morphogenesis in regeneration. (Nemertea) 



d Immunological consequences of auto-, homo- and heteroplastic grafts. (Nemertea) 

 BIGGELAAR, J. A. M. v.d. Ph.D. ~ Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, 



UTRECHT, Netherlands 

 a RNA synthesis in early stages. Lymnaea stagnalis (Gastropoda) 

 b Relation between division chronology and early differentiation. Same species as a 

 BIGGERS, J. D. D.Sc, Ph.D., Prof. — Dept. of Popul. Dynamics, Sch. of Hyg. and Publ. 



Health, Johns Hopkins Univ., 615 N. Wolfe St., BALTIMORE, Md. 21205, U.S.A. 

 a Organ culture of fallopian tubes and ovaries. (Mammalia) 

 b Culture and metabolism of eggs. (Mammalia) 



c Oocyte maturation. (Asteroidea), Homo sapiens and other spp. (Mammalia) 

 d Reproduction and embryology of wild animals. (Mammalia) 

 BIJTEL, Miss J. H. D.Sc, M.D. ~ De Boelelaan 275, "Zuidwende", AMSTERDAM-Buiten- 



veldert, Netherlands • 



BILLETT, F. S. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON S09 



5NH, England 

 a Differentiation of embryonic epidermis. Xenopus laevis (Anura), Amby stoma mexicanum 



(Urodela) 

 b Fine structure of early oocytes, pre-vitellogenic phase. Xenopus laevis (Anura), Ambystoma 



mexicanum (Urodela) 

 BILLINGTON, W. D. Ph.D. ~ Dept. of Zool., Univ. of Oxford, South Parks Rd., OXFORD 



OX1 3PS, England 

 a Development of the embryo. (Mammalia) 

 b Biology of the trophoblast. Mus musculus (Rodentia) 

 c Immunological aspects of pregnancy. (Mammalia) 



BILO, Mrs. A. — Inst, fur Genet., Univ. des Saarlandes, 66 SAARBROCKEN 11, W.Germany 

 a Juvenile hormone, inorganic ions and puffing patterns in giant chromosomes. Chironomus 



thummi (Diptera) 

 BILQEES, Mrs. F. M. Ph.D. — Dept. of Zool., School of Parasitol., Univ. of Karachi, 



KARACHI 32, W.Pakistan 

 a Segmentation ( = fragmentation) , asexual multiplication, and regeneration in adults. 



Cameronia gen. nov., Segmentatum gen. nov. (Stomachicolinae, Hemiuridae, Trematoda) 

 b Experiments on the life cycle and pathology. Clinostomum spp., Euclinostomum spp. 



(Trematoda) 

 BINNS, W. Dr. — Anim. Dis. and Parasite Res. Div., Agric. Res. Serv., 1150 E. 14th N., 



LOGAN, Utah 84321, U.S.A. 

 a Experimental teratology, (with M. M. BRYDEN, Sydney and H. EVANS, Ithaca, N.Y.) 

 BIRCH-ANDERSEN, A. - State Serum Inst., Amagerboulevard 80, COPENHAGEN S, 



Denmark 

 a The ultrastructure of normal and pathological sperm. Bos taurus (Artiodactyla) (with E. 



BLOM, State Vet. Serum Lab.) 

 BIRGE, W. J. Ph.D., Prof. — Dept. of Zool., Univ. of Kentucky, Funkhouser Bldg., LEXING- 

 TON, Ky. 40506, U.S.A. • 

 BIRKY, C. W., Jr. Ph.D. — Fac. of Genet., Ohio State Univ., 1735 Neil Ave., COLUMBUS, 



Ohio 43210, U.S.A. • 



BIRNSTIEL, M. L. Dr.Sc.nat. — Dept. of Anim. Genet., Univ. of Edingburgh, King's 



Buildings, EDINBURGH EH9 3JN, Scotland, U.K. • 



a Characterization of ribosomal DNA. Xenopus laevis (Anura) 

 b Characterization of 9s pulse-labelled messenger RNA. (Echinoidea) 

 BISHOP, D. W. Ph.D., Prof. — Dept. of Physiol., Med. Coll. of Ohio at Toledo, P.O.Box 



6190, TOLEDO, Ohio 43614, U.S.A. • 



a Contractile protein and contractile mechanisms of spermatozoa. (Mammalia) 

 b Testicular enzymology. (Mammalia) 



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

 d Metabolic controls in germ-cell differentiation. (Mammalia) 

 BISHOP. M. W. H. Ph.D. — Dept. of Anim. Husbandry, School of Vet. Sci., Univ. of Bristol, 



Langford House, Langford, BRISTOL BS18 7DU, England 

 a Gametogenesis. (Mammalia) 



b Congenital abnormalities, especially embryonic death and intersexuality. (Mammalia) 

 BISHOP (CALAME), Mrs. S. M. Lic.es Sci. — Dept. of Poultry Husbandry, Univ. of Calif., 



DAVIS, Calif. 95616, U.S.A. • 



BJERRE, B. M.D. ~- Tornblad-Inst. for Comp. Embryol.. Biskopsgatan 7, S-223 62 LUND, 



Sweden 



21 



