BECKER, V. Dr.med., Prof. — Pathol. Inst, der Freien Univ. Berlin, Klin. Westend, Span- 



dauer Damm 130, 1 BERLIN 19, W.Germany 

 a General and special pathology of placenta. (Mammalia) 



BEERMANN, W. Dr.rer.nat, Prof. — Max Planck Inst, fur Biol., Spemannstr. 34, 74 TU- 

 BINGEN, W.Germany 

 BEETSCHEN, J. C. Dr.es Sci., Prof. — Lab. de Biol. Gener., Univ. Paul-Sabatier, 118 Route 



de Narbonne, 31 TOULOUSE 04, France • 



a Experiments on the differentiation of cultured embryonic cells. (Urodela) (with A M 



DUPRAT) 

 b The recessive semi-lethal factor ac: temperature-sensitivity of homozygous mutants; 



maternal effect in the progeny of mutant females. Pleurodeles waltlii (Urodela) 

 c Genetical aspects of protein differentiation in embryonic stages. Same species as b (with 



F. GASSER) 

 BEHRMAN, S. J. M.D., Prof. — Dept. of Obstet. and Gynecol., Center for Research in 



Reprod. Biol., Univ. of Michigan Med. School, 202 Women's Hosp., ANN ARBOR, Mich. 



48104, U.S.A. 

 a Antigenicity of the trophoblast. Oryctolagus cuniculus (Lagomorpha) , Mus musculus 



(Rodentia) , (Primates) 

 b Sperm antibodies. Homo sapiens (Primates) 

 BEIDERBECK, R. Dr. — Bot. Inst., Univ. Heidelberg, Hofmeisterweg 4, 69 HEIDELBERG, 



W.Germany 

 a Crown gall induction; tumor-inducing-principle. Bryophyllum daigremontianum, and other 



species ( Angiospermae) 

 BEIER, H. M. Dr.rer.nat. — Anat. Inst., Univ. Marburg, Robert-Koch-Str. 6, 355 MARBURG/ 



Lahn, W.Germany 

 a Experimental developmental morphology of preimplantation stages, postimplantation stages 



and their endocrinological developmental control. Oryctolagus cuniculus (Lagomorpha), 



Cavia porcellus, Rattus spec. (Rodentia) 

 b Specific uterine proteins (e.g. uteroglobin) and their hormonal controlled interference with 



blastocyst development. Oryctolagus cuniculus (Lagomorpha), Homo sapiens (Primates) 

 BEINBRECH, G. Dr. — Inst, fur Zellphysiol., Abt. fiir Biol., Ruhr Univ., Buscheystr., Post- 



fach 2148, 463 BOCHUM. W.Germany 

 a Development of muscles during metamorphosis: formation of the myofibrils and of the 



sarcotubular system. Phormia regina (Diptera) 

 b Formation of contractile myofibrils in asynchronous indirect flight muscles during meta- 

 morphosis. Phormia terrae-novae (Diptera) 

 BELKA (GRZYBEK) , Mrs. A. Ph.D. — Dept. of Gen. Biol., Silesian Acad, of Med., K.Marksa 



19, Rokitnica, ZABRZE 8, Poland 

 BELL, E. Ph.D., Prof. — Dept. of Biol., Massachusetts Inst, of Technol., 77 Massachusetts 



Ave., CAMBRIDGE, Mass. 02139, U.S.A. • 



a Information transfer and regulation between nucleus and cytoplasm in differentiating cells. 



Gallus domesticus (Aves), Mus musculus (Rodentia) 

 b Regulation of macromolecular synthesis in the developing lens. Gallus domesticus (Aves) 

 BELL, L. G. E. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON S09 



5NH, England 

 a Membrane mediated control of cell behaviour, especially movement. (Amoeba proteus) 



(Rhizopoda) 

 b The changing relationship between nucleus and cytoplasm during the cell cycle. (Amoeba 



proteus) (Rhizopoda) 

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

 ton, LONDON W.2, England 

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

 b Embryonic membranes. (Reptilia) 

 c Regeneration. (Reptilia) 

 BELLAIRS, Mrs. M. R. Ph.D. ~- Dept. of Anat. and Embryol., Univ. Coll. London, Gower 



St., LONDON WC1E 6BT, England • 



a Electron microscopy and histochemistry of yolk formation. Gallus domesticus (Aves) (with 



M. A. ENGLAND, Royal Free Hosp.) 

 b Cell migration within the embryo. Gallus domesticus (Aves) (with M. BACKHOUSE) 

 BELL WARE, F. T. B.Sc. - Dept. of Zool., Coll. of Sci., Univ. of W.Ontario, LONDON 72, 



Ont, Canada 

 BELOUSOV, L. V. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, 



Lenin Hills, MOSCOW B-234, U.S.S.R. 

 a Spatial distribution and physical nature of the forces involved in shaping of epithelial 



layers. Obelia spec, Dynamena spec. (Hydvozoa; Amphibia) 

 b Metabolic gradients, their physico-chemical nature and interrelations with morphogenetic 



processes (development of planula, budding). Obelia spec, Hydra spec. (Hydrozoa; 



Echinodermata) 

 BENAZZI (LENTATI), Mrs. G. Prof. ~- 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 



4, 56100 PISA, Italy 



17 



