Plastids of embryos in three general developmental stages in in vitro embryogenesis. Same species 



as a 



PRIESTER W de; Ph.D. - Zool. Lab., Unit of Cell Biol, and Morphogen., State Univ., Kaiserstr. 63, 



Postbiis 9516,' 2300 RA LEIDEN, Netherlands 

 a Electron microscopy of developmental stages. Calliphora erythrocephala (Diptera) 

 b Morphological and functional alterations of organelles during metamorphosis. Same species as a 

 c Role of hormones in premetamorphic changes. Same species as a 

 PRIEUR, D. M.; Dr.3e Cycle - Lab. de Zool., Univ. de Bretagne Occidentale, 6 av. le Gorgeu, 29283 



BREST Cedex France 

 PRINCEVA, Ms. O. Yu.; Cand.sci. - Chair of Embryol., Biol. Fac, Moscow State Univ., Lenin Hills, 



MOSCOW 117234, USSR ^ . .. „ ^ . x, ,• • 



a Ribonucleoprotein-containing particles in differentiating nuclei of erythroid ceUs. Columba livia 



f Avcs) 

 b Changes in differentiating nuclei during early development of embryos with normal or transplanted 



nuclei. Misgurnus fossilis (Teleostei) , ,„^, 



PRITCHARD, D. J.; Ph.D. - Dept. of Human Genet., Univ. of Newcastle, 19 Claremont Place, 



NEWCASTLE-upon-Tyne NE2 4AA, England , • , ^ 



a Synthesis, ontogeny, location, and immunochemistry of lens proteins in normal animals and 



mutants. Callus domesticus (Aves), Mus musculus (Rodentia) (with D. S. McDEVITT (Philadel- 



b Ultrastructure, immunology and cell properties of lenses with normal and genetically modified 

 cell membranes. Same species as a (with D. I. de POMERAI (Nottingham)) 



c Differentiation and cell interactions in vitro of normal and abnormal ocular epithehum. Same 

 species as a (with D. L de POMERAI) 



d In vitro analysis of transdifferentiation of neural and pigmented retina. Same species as a, and 

 Homo sapiens (Primates) (with D. I. de POMERAI) 



e In vitro analysis of teratogens. (wi;h D. I. de POMERAI) 



f Development and degeneration of the retina. Same species as d 



g In vitro analysis of gene expression and its control in Down's syndrome. Homo sapiens (Primates) 



PROPPER, A. Y.; Dr.Sc. - Lab. de Zool. et Embryol., Fac. des Sci. et des Techn. de Besan^on, place 

 Marechal Leclerc, 25030 BESAN^ON Cedex, France 



a Mammary gland embryogenesis: 1. tissue interaction; 2. transmission and scanning electron micros- 

 copy. Oryctolagus cuniculus (Lagomorpha) 



b Heterospecific tissue interactions. (Aves; Mammalia) 



c Interactions between cancerous and embryonic mammary tissues. Oryctolagus cuniculus (Lago- 

 morpha), Homo sapiens (Primates) ^ 



PROTASE (POPPER), Ms. A. - Chaire de Biol.-Histol., Inst, de Med. et Pharm., Fac. de Med., Str. 

 Republicii No. 48, 3400 CLUJ-Napoca, Rumania 



a Conelation entre le foie en regeneration et autres organes (surrenale, testicule). Rattus spec. 



(Rodentia) -. t-v- 



b Influence de I'hormone gonadotrope choriale sur Taction de 1 insecto-tungjcide Dipterex concer- 



nant I'appareU genital de I'embry on. Callus spec. (Aves) ^. .„,-,. ^ r c ■ ^ 



PRZELECKA Ms A.; Dr. - Dept. of Cell Biol., Nencki Inst, of Exp. Biol., Polish Acad, of Sci., 3 



Pasteur St., 02-093 WARSZAWA, Poland 

 a Developmental changes in ultracytochemical characteristics of plasma membrane: Acanthamoeba 



castellanii (Rhizopoda); oocyte: Galleria mellonella (Lepidoptera) 

 PUCCI (MINAFRA), Ms. I. - 1st. di Anat. Comp., Univ. di Palermo, Via Archu-afi 20, 90123 



PALERMO, Italy ^ „^ ^ , 



PUCCIA, E.; D.Sc. - Zool. Inst., Univ. of Palermo, Via Archirafi 18, 90123 PALERMO, Italy 

 a Cyclic nucleotides during embryonic development. Gona intestinaUs (Ascidiacea), Discoglossus 



pictus (Anura) 

 b Cyclic nucleotide pathway in opercular regeneration. Hydroides norvegica (Polychaeta) 

 PUELLES-LOPEZ, L.; M.D., Prof. - Dept. of Anat., Univ. of Sevilla, Plaza de Falla, CADIZ, Spain 

 a Postmitotic neuroblast differentiation and migration patterns in optic tectum, retina and dien- 



cephalon, GaUus gallus (Aves) 

 b Guidance mechanism of motor neuroblast migrations. Same species as a 

 c Pattern of acetylcholinesterase-positive neuroblasts appearing in the embryonic chick brain, 



compared with that of the mouse. Gallus gallus (Aves), Mus musculus (Rodentia) 

 d Development of isthmic nuclei. Same species as a .. 



PURI, E. C; M.Sc. - Inst, of Cell Biol., Swiss Fed. Inst, of Technol., Honggerberg, 8093 ZURICH, 



Switzerland 

 a In vitro myogenesis. Gallus domesticus (Aves) 

 b Control of cell proliferation. Same species as a 

 PYLILO, Ms. I. v.; Cand.biol. - Dept. of Embryol., Leningrad State Univ., Mendeleevsky St. 5, 



199164 LENINGRAD, USSR 

 a Influence of starvation on integration of the organism and on regeneration. Criodrilus lacuum 



(Lumbricomorpha), Aeolosoma variegatum (Naidomorpha, Oligochaeta) ,ni o r-vr 



RAAMSDONK, W. van; Dr. - Zool. Lab., Univ. of Amsterdam, Plantage Doklaan 44, 1018 CN 



AMSTERDAM, Netherlands 

 a Influence of neural and mechanical factors on the development of the muscular system. Brachy- 



danio rerio (Teleostei), Ambystoma mexicanum (Urodela) 

 RADZIKOWSKI, S.; M.Sc. - Dept. of Cytol., Inst, of Zool., Warsaw Univ., Krak. Przedmiescie 26/28, 



00-927/1 WARSZAWA, Poland 

 a Intraclonal conjugation and abortive conjugation resulting in permanent ability for seirmg;daUy 



changes in mating type expression. Chilodonella steini (Ciliata) 

 92 



