(Diptera) 

 c Cytological aspects of gene amplification in oogenesis. Dytiscus maiginalis and other spec. 



(Coleoptera) 

 d Cytochemistry and autoradiography of oogenesis, especially nucleic acid metabolism in nurse 



cells. (Diptera, Coleoptera) 

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



Shchepkin St. 61/2, MOSCOW 125110, U.S.S.R. 

 a Cytological characteristic of the regenerating liver. Rattus norvegicus, Mus musculus, Cavia 



porcellus and other spp. (Rodentia) 

 RYCZKOWSKI, M. Doc, Dr. - Lab. of Plant Physiol. Jagiellonian Univ., Grodzka 53, KRAKOW, 



Poland 

 a Changes of the oxygen tension (p0 2 ) in the ovule during inhibition and exponential phase of the 



embryo growth. Haemanthus katharinae, Clivia miniata (Angiospermae) 

 b Free amino acids in the environment of the embryo. Haemanthus katharinae, Clivia miniata, 



Aesculus hippocastanum, A. hybrida (Angiospermae) 

 c Photosynthesis in the developing embryo. Haemanthus katharinae (Angiospermae) 

 d Respiration rate of the developing ovule and embryo. Same species as a 

 e Osmotic gradient in the developing ovule. (Gymnospermae) 

 RYFFEL, G. Dr.phil. - Div. of Cell and Developm. Biol., Zool. Inst., Univ. of Bern, Sahlist.8, 3012 



BERN, Switzerland 

 a Thyroxine and RNA synthesis in tadpole tissues. Xenopus laevis (Anura) (with R. WEBER, 



U. SCHIBLER and O. HAGENBUCHLE) 

 b Processing of rRNA 

 RYLAND, J. S. Ph.D. - Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWANSEA, 



Glamorgan, Wales, U.K. , 



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



Poland 

 SAAG.P.T. van der M.Sc. - Hubrecht Lab. (Intern. Embryol., Inst.), Uppsalalaan 1, Universiteitscen- 



trum 'De Uithof, UTRECHT, Netherlands 

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



(Amphibia) (with S. K. BRAHMA) 

 b The role of cell membrane properties in the regulation of the cell cycle. Xenopus laevis (Anura) 



(with S. W. de LAAT) 

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



Italy 

 a Determination of polarity and bilateral asymmetry of the zoids. Botryllus schlosseri (Ascidiacea) 

 SABELLI, B. Dr. - Inst, of Zool., Univ. of Bologna, Via S.Giacomo 9, 40126 BOLOGNA, Italy 

 a Oogenesis in parthenogenetic and amphigonic eggs. Daphnia spec. (Cladocera, Crustacea) 

 b Regeneration and origin of germ cells. Mercierella enigmatica (Serpulidae, Polychaeta) 

 SACARRAO, G. da FONSECA Dr.Sc, Prof. - Fac. de Ciencias, Museu Bocage, Ruada Escola 



Politecnica, LISBOA, Portugal 

 a Development of the epistellar body. Octopus spec, Argonauta spec. (Cephalopoda) 

 b Development of the statocyst. (Cephalopoda) 



c Blastokinesis. Tremoctopus violaceus. Octopus vulgaris (Cephalopoda) 

 SADOKOVA, Miss I. E. - Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, 



MOSCOW 117334, U.S.S.R. 

 a Regeneration of myocardium (biochemistry). Oryctolagus cuniculus (Lagomorpha) 

 SAFANDA, J. ing.chem. - Inst, of Pathophysiol., Charles Univ., Lidicka, ?06 05 PLZEN, Czecho- 

 slovakia 

 a Characteristics of the transport of 4-aminobutyric acid in developing brain. Rattus spec. 



(Rodentia) 

 SAKUN, Mrs. O. F. Cand.biol.sci. - Biol. Inst., Leningrad State Univ., LENINGRAD B-164, U.S.S.R. 

 a Effects of pituitary gonadotropins on the various phases of oogenesis, especially to the 



correlations between meiosis and vitellogenesis. Salmo salar, Oncorhynchus gorbuscha, Coregonus 



lavaretus pidschian (Clupeiformes), Acerina cernua (Perciformes, Teleostei) 

 SALA, M. Dr.biol.sci., Prof. - 1st. di Biol. Anim., Univ. di Padova, Via Loredan 10, 35100 PADOVA, 



Italy ISDB 



a Later differentiation of embryonic mesenchyme cells in culture medium. Botryllus schlosseri 



(Ascidiacea) 

 b Migration of neural crest cells studied by means of localized radioactive marks. Triturus cristatus 



(Urodela) 

 c Embryonic and adult hemoglobin. (Anura) 

 SALAMATINA, Miss N. V. - Dept. of Developm. Biol., Inst, of Exp. Morphol., Acad, of Sci. of the 



Georgian SSR, Digomi, 380059 TBILISI, U.S.S.R. 

 a Role of chemical intercellular interactions in the regulation of the rate of cell multiplication and 



intracellular synthesis, studied in cell cultures and in vivo. Gallus domesticus (Aves), Rattus 

 ' norvegicus, Mus musculus (Rodentia) 

 SALAUN, Miss J. Dr.es Sci. - Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la Belle 



Gabrielle, 94130 NOGENT-sur-MARNE, France ISDB 



a Formation experimentale d'embryomes homoplastiques et heteroplastiques. Gallus gallus (Aves), 



Rattus rattus (Rodentia) 

 b Influence reciproque des cellules cancereuses et embryonnaires reunies sur un meme hote. Rattus 



rattus, Mus musculus (Rodentia) 

 SALVATORELLI, G. Ph.D. - 1st. di Anat. Comp., Univ. di Ferrara, Via Scienze 17, 44100 



85 



