a Cytokinesis in blastomeres from two-cell stage: 1. microcinematography; 2. ultrastructure after 



cytochalasin-B-treatment; 3. colcemid blocking; 4. contractility of glycerinated models. Mus 



musculus (Rodentia) 

 b Changes of cortical properties of oocytes and fertilized eggs as revealed by cytochalasin 



B-induced blebbing. Same species as a 

 ORLOVA, Ms. I. I.; Cand.biol.sci. - Lab. of Embryol., Inst, of Human Morphol., Acad, of Med. Sci. 



of the USSR,Tsurupa St. 3, MOSCOW 117469, U.S.S.R. 

 ORTOLAN!, Ms. G.; D.Sc, Prof. - Zool. Inst., Univ. of Palermo, Via Archirafi 18, 90123 PALERMO, 



Italy 

 ORIS LLORCA, F.; Prof. - Dept. of Anat., Fac. of Med., Ciudad Univ., MADRID, Spain 

 OSIPOV, V. v.; Dr. - Inst, of Med. Genet., Kashirskoye Chaussee 6a, MOSCOW 1 15478, U.S.S.R. 

 a Genetic regulation of development of brain, eye, and limbs. Mus musculus (Rodentia) 

 OSTROUMOVA, Ms. T. W. - Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, 



MOSCOW 117234, U.S.S.R. 

 a Interaction between morphogenetic and metabolic processes in early embryonic development. 



(Hydrozoa; Echinoidea) 

 OUDHOF, H. A. J.; Dr. - Orthodont. Dept., Dent. Sch., State Univ. of Utrecht, Sorbonnelaan 16, 



"De Uithof, UTRECHT, Netherlands 

 a Experiments on persistence of cranial sutures till old age; possible causes: bone movements or 



sutural tissue properties (transplantation of bone into suture). Rattus norvegicus (Rodentia) 



(with 1. S. MARKENS) 

 OYEN, H. van; Drs. - NetherL Inst, for Brain Res., IJdijk 28, AMSTERDAM, Netherlands 

 a . development and correctibility of behaviour. Rattus norvegicus (Rodentia) 

 OZDZElQSKI, W.; Ph.D. - Dept. of Embryol., Zool. Inst., Univ. of Warsaw, Krak.Przedmies'cie 26/28, 



00-927 WARSZAWA, Poland 

 a Differentiation of the somatic and germinal tissues of the gonad. Mus musculus (Rodentia) 

 b Normal development. Clethrionomys glareolus (Rodentia) 



OZOH, P.; B.Sc. - Inst, of Zool., Uppsala Univ., Box 561, 751 22 UPPSALA, Sweden 

 a Effects of pollutants on development. (Teleostei) 



PALA, Ms. M.; Dr. - 1st. di Zool., Univ. di Sassari, Via Murroni 25, 07100 SASSARI, Italy 

 PALECEK, J.; RNDr. - Dept. of Exp. Zool., Charles Univ.. Vinicna 7, 12844 PRAHA 2, Czechoslo- 

 vakia 

 PALfiN, K.; FU.Kand. - Zoophysiol. Inst., Univ. of Lund, Helgonaviigen 3, 223 62 LUND, Sweden 

 PALLADINI, G.; Prof. - 1st. di Biol. Gen., Univ. di Roma, Policlinico Umberto I, 00100 ROMA, Italy 

 a Effects of heavy metals and food dyes on head regeneration. Dugesia gonocephala (Turbellaria) 

 b Effects of heavy metals, food dyes and pollutants on development of nervous system. Xenopus 



laevis (Anura) 

 PANELIUS, S.; Ph.D. - Dept. of ZooL, Univ. of Helsinki, P. Rautatiekatu 13, 00100 HELSINKI 10, 



Finland 

 PANIGEL, M.; Dr.Med., D.Sc, Prcf. - Lab. de Biol, de la Reprod., Univ. Paris VI (P. et M. Curie), 



Bat.A, 7eme etage, 7 quai Saint-Bernard, 75230 PARIS Cedex 05, France 

 a Physiology of fetal-maternal exchange. Macaca mulatta, M. fascicularis, Papio cynocephalus 



(Primates) 

 b Ultrastructure of the placental membrane. (Primates) 



c Ultrastructure of trophoblast during pathological pregnancy. Homo sapiens (Primates) 

 d Fetal visualization in utero (X-ray scanning, echotomography) (Primates) 

 PANNESE, E.; M.D., Prof. - 2nd Inst, of Human Anat., Univ. of Milano, Via Mangiagalli 14, 20133 



MILANO, Italy 

 a Morphology and histochemistry at the electron microscope level of the degenerative events in 



embryonic spinal ganglia. Gallus gallus (Aves) 

 b Membrane specializations in embryonic spinal ganglia, particularly cell junctions (freeze-fracture 



and lanthanum techniques). Same species as a 

 PANOVA, Ms. I. G. - Koltzov's Lab. of CeU Differ., Inst, of Devi. Biol., Acad, of Sci. of the USSR, 



VavUov St. 26, MOSCOW 1 1 7334, U.S.S.R. 

 a Dependence of DNA synthesis and cell proliferation in pigment epithelium of the retina upon 



general growth factors of the eye. Rattus norvegicus (Rodentia) (with O. G. STROEVA) 

 PANTELOURIS, E. M.; Ph.D. - Biol. Dept., School of Biol. Sci., Univ. of Strathclyde, George St., 



GLASGOW Gl IXW, Scotland, U.K. 

 a Immunobiology of the athymic mutant nude. Mus musculus (Rodentia) 

 b Development of lymphoid tissues and immune responses. Same species as a 

 c Biological aspects of ageing 

 PAPAIOANNOU, Ms. V. E.; Ph.D. - Zool. Dept., Univ. of Oxford, South Parks Rd., OXFORD 0X1 



3PS, England 

 a Analysis of mutants in chimeras. Mus musculus (Rodentia) 

 b Injection of teratocarcinoma cells into embryos. Same species as a 



PAPILLON, Ms. M. - U.E.R. de Biol.-Zool., Univ. Paris VI, 105 Bd. Raspail, 75006 PARIS, France 

 a Influence of breeding temperature upon protein patterns in haemolymph, fat body, and oocytes 



(electrophoresis). Schistocerca gregaria (Orthoptera) 

 b Effect of parasitisation by Halameba locustae on protem patterns and oocyte growth. Same 



species as a 

 c Effects of breeding temperature upon ecdysone and juvenile hormone levels. Same species as a 

 PARISI, E. - Lab. of Molec Embryol., Consiglio Naz. delle Ricerche, Via Toiano 2, ARCO FELICE, 



C.P.3042, 80100 NAPOLl, Italy 

 a Enzymes controlling DNA synthesis in developing embryos. Paracentrotus lividus (Echinoidea) 



79 



