a Placental structure and function: ultrastructural and perfusion studies (morphology, phys- 



iolgy and pathology). Cavia spec, Mus spec. (Rodentia), Homo sapiens (Primates) 

 b The uteroplacental circulation. Cynomolgus spec. (Primates) 

 PANITZ, R. Dr. — Inst. f. Kulturpflanzenforsch. der Deutschen Akad. der Wissensch. zu 



Berlin, GATERSLEBEN, Kr. Aschersleben, Deutsche Demokratische Republik 

 PANNESE, E. M.D., Prof. — 2nd Chair of Human Anat., Anat. Inst., Fac. of Med., Univ. 



of Milano, Via Mangiagalli 31, MILANO, Italy 

 a Electron microscope study of the differentiation of embryonic spinal ganglion neuroblasts. 



Gallus g alius (Aves) 

 b Electron microscope study of the development of satellite cells in spinal ganglia. Gallus 



gallus (Aves) 

 PANT, Mrs. R. Ph.D. — Biochem. Sect., Fac. of Sci., Allahabad Univ., ALLAHABAD-2. 



India 

 a Quantitative studies of various metabolites in eggs, e.g. nitrogenous compounds, phospho- 

 rus compounds, reducing substances and citric acid. Philosamia ricini (Lepidopteca), 



Musca domestica, Sarcophaga ruficornis (Diptera) (in collaboration with Miss P. LACY, 



D. M. LAL, S. C. SHARMA and R. VARMA) 

 b Variation in the activity of some enzymes in eggs. Philosamia cicini (Lepidoptera), Musca 



domestica, Sarcophaga ruficornis (Diptera) (in collaboration with Miss P. LACY, D. M. 



LAL, S. C. SHARMA and R. VARMA) 

 PANTELOURIS, E. M. Ph.D. — Dept. of Applied Microbiol. & Biol., Univ. of Strath- 



clyde, George St., GLASGOW C.l. Scotland, U.K. 

 a Effects of radiation on foetuses and means of alleviating them. Mus musculus (Rodentia) 

 b Ontogenesis and inheritance of iso-enzymes. Drosophila spp. (Diptera), (Vertebrata) 

 PAPACONSTANTINOU, J. Ph.D. — Biol. Div., Oak Ridge Nat. Lab., P.O. Box Y, OAK 



RIDGE, Tenn. 37831, U.S.A. 

 a Studies on the regulation of protein and nucleic acid synthesis in lens cell differentiation 



in vivo and in vitro. Gallus domesticus (Aves), Bos taucus (Artiodactyla) 

 h The molecular events associated with lens fiber cell formation in vivo and i n 



vitro; a) DNA synthesis; b) RNA synthesis and mechanism of stabilization of m-RNA; 



c) regulation of protein synthesis. Gallus domesticus (Aves). Bos taurus (Artiodactyla) 

 PARISI, V. Dr. — 1st. di Zool.. Univ. di Milano, Via Celoria 10, MILANO, Italia 

 PARK, Miss H. D. Ph.D. — Natl. Inst, of Arthritis and Metabolic Diseases, BETHESDA, 



Md. 20014, U.S.A. 

 a Induction of differentiation of the male gonad. Hydra littoralis (Hydroidea) 

 h Relationship of growth and sexual differentiation to temperature changes. Hydra pseud- 



oligactis (Hydroidea) 

 c Cell division, differentiation and movement during regeneration. Hydra pseudoligactis 



(Hydroidea) 

 PARKASH, S. — Dept. of Anat.. Med. Coll., ROHTAK, India 



a Ages of ossification of various bones in embryos and adults. Homo sapiens (Primates) 

 PARNELL (KING), Mrs. J. B.Sc, M.B., B.Ch., Prof. — Dept. of Anat., School of Med., 



Georgetown Univ., 3900 Reservoir Road, N.W., WASHINGTON, D.C.20007, U.S.A. 

 a Relationship of neurons and oligodendroglia from development to old age. Mus musculus 



(Rodemtia) 

 PARTANEN, C. R. Ph.D., Prof. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH. Pa. 



15213, U.S.A. 

 a Nuclear aspects of cellular differentiation in vitro. Paeonia suf[ruficosa. Allium cepa, 



Pteridium aquilinum 

 PASCAUD, M. Dr., Prof. — Centre de Recherches sur la Cellule Norm, et Cancereuse, 



C.N.R.S., B.P.No.8, VILLEJUIF 94, France 

 a Study of cellular differentiation. 

 PASCHMA, M. D.Sc. — Zaklad Zool. Ogolnej, Inst. Zool., Univ. of Wroclaw, ul. Sien- 



kiewicza 21, WROCLAW, Poland 

 PASCUAL, Miss A. — Inst, de Biol, Fac. de Bioquim, Quim. y Farmacia, Univ. Nac. de 



Tucuman, Buenos Aires 289, TUCUMAN, Argentina 

 a The tricarboxylic acid cycle in developing eggs. Bufo arenarum (Anura) 

 PASCUAL-MORENILLA, Miss M. T. M.D. — Inst. F. Oloriz, Fac. of Med., Univ. of Gra- 

 nada, GRANADA, Spain 

 a Experimental late structural malformations of the nervous system. Gallus domesticus 



(Aves). Cricetus auratus (Rodentia) (in collaboration with M. GUIRAO-PEREZ) 

 • PASQUINI, P. Ph.D., Prof.— 1st. di Zool. dellUniv.. Viale Regina Elena 324, (al 



Policlinico). ROMA, Italia 

 a Growth and differentiation of regeneration blastema in vivo and in vitro. Planaria 



torva, Dugesia etrusca (Turbellaria) (in collaboration with Miss A. P. BORELLI) 

 b Growth and differentiation in regeneration. Planaria spec. (Turbellaria) (in collaboration 



with H. MANELLI) 

 PASSAPONTI, A. Dr.Med. & Surgery, Prof. — 1st. di Anat. Umana Normale dell' Univer- 



sita, Via Biblioteca 4, CATANIA, Italia 

 a The morphological aspect of embryo atrophy. Homo sapiens (Primates) 



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