Oryctolagus cuniculus (Lagomorpha), Mustela putorius furo (Carnivora) 

 BECKER, v.; Dr.med., Prof. - Pathol. Inst, der Univ. Erlangen-Nurnberg, Krankenhausstr. 8-10, 8520 



ERLANGI-N, B.R.D. (Germany) 

 a General and special pathology of placenta. Homo sapiens (Primates) 

 b Embryology and teratology of the liver, especially of the bile ducts. Same species as a 

 c Embryology and teratology of the skeleton, especially of the chondro- and neurocranium. Same 



species as a 

 BEETSCHEN, J. C; D.Sc, Prof. - Lab. de Biol. Gen., Univ. Paul-Sabatier, 118 Rte de Narbonne, 



31077 TOULOUSE Cedex, France 

 a Chemical mutagenesis (Urodela) (with A. JAYLET and V. FERRIER) 

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



effect in the progeny of mutant females. Pleurodeles waltl (Urodela) (with M. FERNANDEZ) 

 c Genetical aspects of protein and enzyme differentiation in embryonic and larval stages. Same 



species as b (with F. GASSER and A. JAYLET) 

 d Mesodermal determination of the posterior neural plate. Ambystoma mexicanum (Urodela) 

 BEETZ, Ms. B. - Inst, fiir Genet., Univ. des Saarlandes, 66 SAARBRUCKEN 1 1, B.R.D. (Germany) 

 a Influence of inorganic ions on mitosis in neuroblasts. Carausius morosus (Phasmida) 

 BEIER, H. M.; Dr.rer.nat., Dr.med., Prof. - Abt. Anat. der Rhein.-Westf. Techn. Hochschule, Med.- 



Theor. Inst., Melatener Str.211, 5100 AACHEN, B.R.D. (Germany) 

 a Experimental developmental morphology of preimplantation stages, postimplantation stages, and 



their endocrinological developmental control. Oryctolagus cuniculus (Lagomorpha), Cavia porcel- 



lus, Rattus spec. (Rodentia) 

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



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

 c Experiments on development of accessory male genital glands. Oryctolagus cuniculus (Lago- 

 morpha) 

 BEINBRECH,G.; Dr., Prof. - Zool. Inst, der Univ., Arb.gr. Muskelphysiol., Hindenburgplatz 55, 44 



MiJNSTER/Westf., B.R.D. (Germany) 

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



sarcotubular system. Phormia terrae-novae (Diptera) 

 BELLAIRS, A. d'A.; D.Sc, Prof. - Dept. of Anat., St. Mary's Hosp. Med. School, Norfolk Place, 



LONDON W2 IPG, England 

 a Morphogenesis of skeleton, many species (ReptiUa; Aves; Mammalia) 

 b Embryonic membranes, many species (Reptilia) 

 c Regeneration. Same species as b 

 BELLAIRS, Ms. M. R.; Ph.D. - Dept. of Anat. and Embryol., Univ. Coll. London, Gower St., 



LONDON WCIE 6BT, England 

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

 b Cell migration within the embryo. Same species as a (with P. PORTCH and E.J.SANDERS 



(Canada)) 

 c Cleavage. Same species as a (with F. LORENZ, Davis, CaUf.) 

 d Scanning electron microscopy in the embryo. Same species as a 

 e Freeze-fracture studies of embryos. Same species as a (with A. S. BREATHNACH, St.Mary's 



Hosp.) 

 BELOUSSOV, L. V.; Dr.biol. - Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, 



MOSCOW 117234, U.S.S.R. 

 a Patterns of tensile stresses, contact cell polarization and their relation to differentiation of axial 



mesoderm, Rana temporaria (Anura), Gallus domesticus (Aves) 

 b Growth rhythms and morphogenesis. Hydra spec, Thecaphora (Hydrozoa) 

 BENEDETTI, I.; Dr.Biol. - 1st. di Anat. Comp., Univ. di Modena, Via Berengario 14, 41100 



MODENA, Italy 

 a Development of intramedullary ganglion cells. (Labridae & Sygnathidae: Teleostei) 

 b Glycogen in the central nervous system; viviparous and ovoviparous spp. (Teleostei) 

 BENSON, P. F.; M.D., Ph.D. - Paediat. Res. Unit, Guy's Hosp. Med. School, Guy's Tower, LONDON 



SEl 9RT, England 

 a Development of enzyme systems before and after birth. Homo sapiens (Primates) 

 b Prenatal diagnosis of metabolic diseases by cultured amniotic cell enzyme assay. Same species as a 

 BENTYN, K.; M.D. - Lab. of Exper. Embryol., Inst, of Obstet. and Gynecol., Med. Acad., Karowa 2, 



00-315 WARSZAWA, Poland 

 BEREITER-HAHN, J.; Dr.phil.nat., Prof. - Arb.gr. Kinemat. Zellforsch., Univ., Senckenberganlage 



27, 6000 FRANKFURT/M., B.R.D. (Germany) 

 a Electron microscopy of pigment granule formation in melanophores. Pterophyllum scalare 



(Cichlidac), Lebistes reticulatus (Poeciliidae, Teleostei) 

 b Ultrastructure of the development of flame cells in the skin. Hippocampus spec. (Teleostei) 

 c Interference microscopy of tadpole heart cell cycle, measuring of mitochondrial amount and 



structure by vital fluorimetry; electron microscopy of cells during different states of cell cycle. 



Xenopus laevis (Anura) 

 BERGERARD, J.; D.Sc, Prof. - Stat. Biol., place Georges-Teissier, 2921 1 ROSCOFF, France 

 a Physiology of spawning and induction of meiosis in the oocytes. Patella vulgata, P. aspera, P. 



depressa, Gibbula cineraria (Gastropoda) 

 b Regression and regeneration of genital tract in the seasonal sexual cycle. Littorina saxatilis 



(Gastropoda) 

 BERGHOEF.J.; Ir. - Dept. of Plant Physiol., Agric Univ., Arboretumlaan 4, WAGENINGEN, 



Netherlands 



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