Bee-Ber 



BEETSCHEN, J. CI. Dr.es Sci. — Lab. de Biol, gener., Fac. des Sci., 39 

 Allees Jules Guesde, TOULOUSE (Hte-Gne), France 



a. Recherches cytologiques, embryologiques et genetiques sur l'heteroploidie 

 experimentale. (Amphibia) 



b. Hybridation interspecifique. (Amphibia) 



c. Alterations de la morphogenese dans la descendance aneuploide des 

 individus triploides. Pleurodeles waltlii (Urodela) 



d. Anomalies de la mitose et de la meiose chez les individus haploi'des, 

 triploides et aneuploides. Pleurodeles waltlii (Urodela) 



e. Etude autoradiographique du metabolisme des germes heteroploides 

 letaux. Pleurodeles waltlii (Urodela) 



BELKA-GRZYBEK, A. Mgr. — Chair of Gener. Biol., Silesian Acad, of 

 Med., Rokitnica, ZABRZE 8, Poland 



a. Restoration of the surrenal gland after experimental injury. Mus musculus 

 (Rodentia) 



b. Transplantation of the ovary. Mus musculus (Rodentia) 



c. Cytological and histochemical investigations on the regenerating tail. 

 Xenopus laevis (Anura) 



BELL. E. B.A., M.So, Ph.D. — Dept. of Biol., Massachusetts Inst, of 

 Technol., CAMBRIDGE 39, Mass., U.S.A. 



a. Relationship of ectoderm to mesoderm in limb development. Gallus 

 gallus (Aves) 



b. Differentiation and morphogenesis of embryonic skin cells returned to 

 an embryonic environment after growth in vitro. Gallus gallus (Aves) 



c. Biochemical and biophysical analysis of keratin synthesis in the develop- 

 ment of skin and feathers. Gallus gallus (Aves) 



d. Studies on cloning embryonic cells. Gallus gallus (Aves) 



1. Survival as a function of method of dissociation. 



2. Cell selection as a function of substrate. 



3. Differentiation as a function of critical mass. 



e. Growth and differentiation of embryonic central nervous system grown 

 in vitro from dissociated cells or tissue fragments. Gallus gallus 

 (Aves) 



f. Ultrasound as a tool in experimental embryology. 



BELL, L. G. E. B.Sc, Ph.D., A.R.I.C. M.I. Biol. — Dept. of Zool., King's 



Coll., Strand, LONDON, W.C. 2, England 

 a. Descriptive, experimental and physiological embryology. Ciona intestina- 



lis (Ascidiae), Xenopus laevis (Anura) 

 BELLAIRS, A. d'A. D.Sc. — Dept. of Anat., St. Mary's Hosp. Med. School, 



LONDON W. 2, England 



a. Morphogenesis of skeleton. (Reptilia; Aves: Mammalia) 



b. Embryonic membranes. (Reptilia) 



BELLAIRS, Mrs. M. R. B.Sc, Ph.D., M.I.I.E. — Dept. of Anat. and Em- 

 bryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England 



a. An electron microscopical study of area opaca and yolk-sac. Gallus do- 

 mesticus (Aves) 



b. An electron microscopical study of the vitelline membrane. Gallus domes- 

 ticus (Aves) 



BELOFF, Mrs. R. HIRSCH B.A., Ph.D. — Dept. of Pathol., School of 

 Med., Yale Univ., 310 Cedar St., NEW HAVEN, Conn., U.S.A. 



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