PRELIPCEANU, Ms. O.; ing. - Lab. of Enibryol., Ctr. of Hyg. and Publ. Health, Bv. Mihai Viteazul 



24, 1900 TIMI5OARA, Rumania 

 a Tissue culture; embryo culture. Gallus domesticus (Aves) 

 PRESLEY, R.; M.B., B.Chir. - Dept. of Anat., Univ. CoU., P.O.Box 78, CARDIFF CFl IXL, Wales, 



U.K. 

 a Development of cranial structures: comparative correlation between embryology and palaeonto- 

 logy. (Vertebrata) 

 pReSLICKOVA, Ms. M. - Inst, of Pharmacol., Czech. Acad, of Sci., Albertov 4, 128 00 PRAHA 2, 



Czechoslovakia 

 a Technique of the morphological examination of implantation and placentation. Homo sapiens 



(Primates; Rodentia) 

 PRESTIGE, M. C; Ph.D. - Physiol. Dept., Med. School, Univ. of Edinburgh, Teviot Place, 



EDINBURGH EH8 9AG, Scotland, U.K. 

 PRESTON, T. M.; B.Sc. - Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St., LONDON 



WC1E6BT, England 

 a Morphogenesis. Naegleria gruberi (Rhizopoda) 

 PRETOvA, Ms. a.; RNDr., CSc. - Inst, of Exper. Biol, and Ecol., Slovak. Acad, ot Sci., Dubravska c. 



26, 88534 BRATISLAVA, Czechoslovakia 

 a Function of green pigments in young embryos. Linum usitatissimum (Linaceae) 

 b Embryogenesis in vitro and effect of growth substances and other factors on embryogenesis in 



vitro. Same species as a 

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



LEIDEN, Netherlands 

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

 b Morphological and functional alterations of organelles during metamorphosis. 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 

 a Pathology of larvae reared in laboratories and hatcheries. Various spp. (Lamellibranchia) 

 PRITCHARD, D. J.; Ph.D. - Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., 



EDINBURGH EH9 3JN, Scotland, U.K. 

 a Synthesis, ontogeny, location, and immunochemistry of lens protems in nojmal animals and 



mutants. Gallus domesticus (Aves), Mus musculus (Rodentia) (with R. M. CLAYTON, J.C. 



CAMPBELL and D. E. S. TRUMAN (Edinburgh), and D. S. McDEVITT (Philadelphia) 

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



cell membranes. Same species as a (with R. M. CLAYTON, and D. I. de POMERAI) 

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



species as a (with R. M. CLAYTON, and D. I. de POMERAI) 

 d In vitro analysis of transdifferentiation of neural and pigmented retina. Gallus domesticus (Aves) 



(with R. M. CLAYTON and D. I. de POMERAI) 

 e In vitro analysis of teratogens, (with R. M. CLAYTON and D. I. de POMERAI) 

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



Marechal Leclerc, 25030 BESANC^ON Cedex, France 

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



microscopy. Oryctolagus cuniculus (Lagomorpha) 

 b Heterospecific tissue interactions. (Aves; Mammalia) 

 c Interactions between cancerous and embryonic mammary tissues. Oryctolagus cuniculus 



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



(Rodentia) 

 b Influence de I'hormone gonadotrope choriale sur Taction de Einsecto-fungicide Dipterex con- 



cernant I'appareil genital de I'embryon. Gallus spec. (Aves) 

 PRZYBYLLOK,Th.; Dr.rer.nat. - Inst, fiir Entw.physioL, Univ. zu Kobi, Gyrhofst. 17,5 K0LN41, 



B.R.D. (Germany) 

 a Interaction of plant hormones in leaf morphogenesis. Antirrhinum majus (Scrophulariaceae) 

 b Biochemistry and analytical chemistry of plant hormones and their enzymes. Same species as a 

 PUCCI (MINAFRA), Ms. L - 1st, di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 



PALERMO, Italy 

 a Characterization of embryonic collagen and identification of its possible precursor. Paracentrotus 



Uvidus (Echinoidea) 

 PUCCIA, E.; D.Sc. - 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy 

 a Isolation of actin in eggs. Ciona intestinalis (Ascidiacea) 



b Ribosomal RNA synthesis during opercular regeneration. Hydroides norvegica (Polychaeta) 

 c Cyclic nucleotides during embryonic development. Discoglossus pictus (Anura) 

 PUELLES-LOPEZ, L.; M.D. - Dept. de Anat., Fac. de Med., BADAJOZ, Spain 

 a Light and electron microscopy of neuroblast migrations. Gallus gallus (Aves) 

 b Postmitotic neuroblast differentiation and migration patterns in optic tectum, retina and di- 



encephalon. Same species as a 

 c Guidance mechanism of motor neuroblast migrations. 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 



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