a Teratogenetic action of inhibitors of cholesterol synthesis. Rattus spec, Mesocricetus auratus, 



Mus musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha) 

 b Teratogenesis by irradiation. Rattus rattus (Rodentia) 

 RUANO GIL, D.; Dr., Prof. - Dept. of Anat., Univ. of Barcelona, C/.Casanova 143, BARCELONA 36, 



Spain 

 a Development of neural retina and lens. Gallus domesticus (Aves) 

 b Experiments on the development of the joints. Same species as a 



c Biochemical changes in cerebrospinal fluid during embryonic development. Same species as a 

 RUBTSOV, V. V. ~ A. N. Severtzov Inst, of Evol. Morphol. and Ecol. of Animals, Acad, of Sci. of the 



USSR, Lenin Ave. 33, MOSCOW 117071, USSR 

 RUCH, J. v.; Dr.Med., D.Sc, Prof. - Inst, de Biol. Med., Univ. L.Pasteur, 11 Rue Humann, 67085 



STRASBOURG Cedex, France 

 a Epithelial-mesenchymal interactions in teeth. Mus musculus (Rodentia) 

 b Cell kinetics during odontogenesis. Same species as a 

 RUMPLER, Y.; M.D., Ph.D., Prof. - Inst. d'Embryol., Fac. de Med., Univ. de Strasbourg, 11 Rue 



Humann, 67000 STRASBOURG, France 

 a Chromosomal development and meiosis in hybrids. (Insectivora), all Malagasy and African 



species of Lemuridae, Indridae, Lepilemuridae, Galagidae, Lorisidae (Primates) 

 b Chromosomal pathology in development. Homo sapiens (Primates) 

 RUNN, P.; Fil.kand. - Inst, of Zool., Uppsala Univ., Box 561, 751 22 UPPSALA, Sweden 

 a Morphological aberrations in embryos exposed to pollutants. (Teleostei) 

 RUSSO-CAIA, S.; Prof. - II. Qiair of Histol. and Embryol., Fac. of Sci., Univ. of Roma, Qtta Uni- 



versitaria, 00100 ROMA, Italy 

 a Cytochemistry and autoradiography of mesonephros regression. (Aves; Mammalia) 

 b Mechanism of metamorphosis: histolysis, especially lysosomal enzymes. Musca domestica (Dip- 



tera) 

 c Ultrastructural observations on the presence of juxtaglomerular cells in the embryonic kidney. 



Same species as a 

 d Cell surface changes in the differentiation of isolated hepatocytes. Same species as a 

 RUSU, Ms. V. M. - Biol. Res. Ctr., Str. Republicii No. 48, 3400 CLUJ-Napoca, Rumania 

 a Influence of unusual incubation temperature on development of antibody-forming cells. Gallus 



spec. (Aves) 

 RUVINSKY, A. O.; D.Sc. - Inst, of Cytol. and Genet., USSR Acad, of Sci., Siberian Dept., 630090 



NOVOSIBIRSK, USSR 

 a Developmental and evolutionary aspects of dormant genes 

 b Developmental genetics of silver-black coat colour mutations; different pleiotropic effects of 



these mutations including pathological and lethal. Vulpes fulvus (Carnivora) 

 c Asexual and sexual reproduction; developmental genetics of isozymes. Daphnia pulex (Clado- 



cera, Crustacea) 

 RYABININA, Ms. Z. A.; Cand.biol.sci. - Inst, of Human Morphol., Acad, of Med. Sci. of the USSR, 



Tsurupa St. 3, MOSCOW 117469, USSR 

 RYBERG, Ms. E.; M.Sc. - Wenner-Gren Inst, for Exp. Biol., NorrtuUsgatan 16, 113 45 STOCKHOLM, 



Sweden 

 a Histochemistry and histology of an impulse conducting system in the pluteus. Psammechinus 



miliaris (Echinoidea) 

 RYCZKOWSKI, M.; Doc, Dr. - Lab. of Plant Physiol., Inst, of Molec Biol., Jagellonian Univ., Grodz- 



ka 53, 31-001 KRAK6w, Poland 

 a Respiration rate (Q02) of the developing fruit, ovule, embryo, coat and endosperm tissue. (Angio- 



spermae) 

 b Quantitative and qualitative changes of the pigments in the developing embryo. (Angiospermae) 

 c Concentration gradients of low molecular compounds in the developing ovule. (Angiospermae) 

 RYFFEL, G. U.; Ph.D. - Div. of Cell and Devi. Biol., Zool. Inst., Univ. of Bern, SahUstr. 8, 3012 



BERN, Switzerland 

 a Regulatory mechanism of estrogen-dependent synthesis of vitellogenin . Xenopus laevis (Anura) 



(with R. WEBER) 

 RZEHAK, K.; Ph.D. - Dept. of Biol, and Embryol., Med. Acad., ul.Kopernika 7, 31-034 KRAKOW, 



Poland 

 a Movements of pigment and cytoplasm after fertilization. (Anura) (with G. A. UBBELS, Utrecht) 

 b Cytokinesis of cleaving eggs. (Amphibia) 

 c Teratogenic effects of insecticides. (Anura) 

 SAADE-HAKIM, Ms. J.; Dr.biol. - Lab. de Biol. Anim. A, Univ. de Bordeaux I, Av. des Facultes, 



33405 TALENCE Cedex, France 

 a Les potentialites morphogenes du mesoderme lateral. Xenopus spec. (Anura), Pleurodeles waltl 



(Urodela) 

 b Les interactions tissulaires au cours de la nephrogenese. (Anura) 

 SAAG, P. T. van der; Ph.D. - Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 8, 3584 CT 



UTRECHT, Netherlands 

 a Regulation of the cell cycle and its significance for development and differentiation; the role of 



changes in membrane properties and structure, ion and cycUc nucleotide metabolism. Neuro- 

 blastoma cells, Mus musculus (Rodentia) (with S. W. de LAAT, W. H. MOOLENAAR, J. 



BOONSTRA, C. L. MUMMERY, E. J. J. van ZOELEN and S. A. NELEMANS) 

 b Biosynthesis of soluble proteins in early development (isoelectric focusing, autoradiography). 



(Amphibia) (with S. K. BRAHMA, State Univ. of Utrecht) 

 SABBADIN, A.; Dr., Prof. - 1st. di Biol. Anim., Univ. di Padova, Via Loredan 10, 35100 PADOVA, 



Italy 



97 



