a. Experimental investigations on the neural tube. (Vertebrata) 



b. Ultramicroscopical investigations on the integument. Homarus vulgaris 

 (Crustacea), (Evertebrata) 



BERNDORFER, A. Dr.med.habil. — Dept. for congenital malformations, 

 Childrens Hosp. "Paul Heim", Olloi ut 86, BUDAPEST VIII, Hungary 

 — Private address: Benczur utca 39/a, BUDAPEST VI, Hungary 



a. Clinical embryopathology. 



b. Intrauterine regenerations of congenital malformations. 



c. Biological study of malformations. 



d. Etiology of malformations from clinical viewpoints. 



BERNSTEIN, G. S. B.A., M.A., Ph.D. — Dept. of Pharmacol., School of 

 Med., Univ. of Southern California, LOS ANGELES, Calif., U.S.A. 



BERREUR (BONNENFANT), Mrs. J. Dr. de 3eme Cycle — Lab. de 

 Genet. evolutive du C.N.R.S., GIF sur Yvette (S. et O.), France 



a. Controle hormonal de la differenciation sexuelle. (Isopoda, Crustacea) 



b. Recherches sur les controles endocrines de la gametogenese par la culture 

 in vitro. (Malacostraca, Crustacea) 



BERRILL, N. J. Ph.D., D.Sc, F.R.1S., Prof. — Dept. of Zool., McGill Univ., 

 MONTREAL, Quebec, Canada 



a. Regeneration. 



b. Metamorphosis. 



c. Somatic embryogenesis. 



BERTMAR, G. Fil.Dr. — Zool. Inst., Univ. of Stockholm, 70A Radmans- 

 gatan, STOCKHOLM, Sweden 

 a. Development and morphology of the skeleton of the head. (Dipnoi; Chara- 

 cidae, Teleostei) 



BERTOLINI, B. Dr.Biol.Sci. — 1st. di Anat. comp. "G. B. Grassi", Fac. di 

 Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia 

 a. Histochemistry and electron microscopy of developing nervous system. 

 Petromyzon spec. (Cyclostomata) , Triturus spec, Rana spec. (Amphi- 

 bia), G alius spec. (Aves) 



BETCHAKU, T. M.Sc. — Dept. of Zool, Wabash Coll., CRAWFORDS- 

 VILLE, Ind., U.S.A. 



a. Histogenesis of regeneration blastema. (Planariidae, Turbellaria) 



b. Culture of cells in vitro. (Planariidae, Turbellaria) 



c. Fine structure of cells (electron microscopy). (Planariidae, Turbellaria) 

 BEYLSTEIN, J. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY 



(Meurthe & Moselle), France 



BIEBER, S. B.A., M.S., Ph.D. — Univ. Coll. of Liberal Arts and Sci., Long 

 Island Univ., 385 Flatbush Avenue Extension, BROOKLYN 1, N.Y., 

 U.S.A. 

 a. Nucleic acid metabolism during gametogenesis, embryogenesis and regen- 

 eration; studies carried out with the aid of analogues of purines and 

 pyrimidines, and with radioisotope-labeled nucleic acid derivatives. Rana 

 pipiens (Anura) 



BIELANSKA (OSUCHOWSKA), Mrs. Z. Dr., Prof. — Inst, of Histol. and 

 Embryol., Veter. Fac, ul. Grochowska 272, WARSZAWA, Poland 



a. Histochemical studies on differentiation of gonads. Sus domestica (Artio- 

 dactyla) 



b. Histochemical studies on differentiation of gonads. (Vertebrata) 



19 



