Per-Pil 



b. Physiologie und Histologic der Regeneration. Blattella spec, Periplaneta 

 spec. (Orthoptera) 

 PERA, L. M.D. — Inst, of Anat. and Histoembryol., Univ. of Pisa, Via Roma 

 33, PISA, Italia 



a. Comparative studies on the sympathetic nervous system. (Reptilia; Aves) 



b. Comparative research on the cloaca. (Pisces; Repitilia; Aves) 

 PERKOWSKA, Mrs. E. MOSER Dr. — Dept. of Cytol., Warsaw Univ.. 



Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland 

 a. Some biochemical characteristics of embryonic mitochondria. Rattus spec. 

 (Rodentia) 

 PERLES, B. — Lab. d'Anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS 

 Vie, France 

 a. Oreille interne. Homo sapiens (Primates) 

 PERLMANN, H. P. Ph.D., M.I.I. E. — Wenner-Gren's Inst, for exper. Biol., 

 Norrtullsgatan 16, STOCKHOLM Va., Sweden 

 a. Serological study of proteins during early development. Paracentrotus 

 lividus (Echinoidea) (in collaboration with Mrs. J. C. KALTENBACH, 

 South Hadley, Mass., U.S.A.) 

 PERRY, Miss M. M. B.Sc. — Inst, of Animal Genet., Univ. Dept. of Genet., 

 King's Buildings, West Mains Road, EDINBURGH 9, Scotland 



a. Study of certain features of developing embryos using electronmicro- 

 graphs. (Amphibia) (in collaboration with C. H. WADDINGTON) 



b. Electron microscope studies of cell cultures. (Amphibia) (in collabora- 

 tion with K. W. JONES) 



c. Electron microscope studies of mutants. Drosophila spp. (Diptera) (in 

 collaboration with C. H. WADDINGTON) 



d. Ultrastructural changes during growth. Micrasterias thomasiana (Des- 

 midoidea. Conjugates) (in collaboration with C. H. WADDINGTON) 



PERTUSA, J. Lic.Sc, Dr.Ph. — Inst. Biol, de Sarria, Dr. Amigant 31, BAR- 

 CELONA 17, Spain 

 a. (Studies on morphogenetic movements in the blastoderm. Gallus domesticus 

 (Aves) 



PETERS, A. B.Sc, Ph.D. — Dept. of Anat., Univ. of Edinburgh, Univ. New 

 Buildings, Teviot Row, EDINBURGH 8, Scotland 

 a. Electron microscope study of Schwann cell-axon relationship in devel- 

 oping nerves. Xenopus laevis (Anura) 



PETERS, Mrs. H. M.D. — Finsen Lab., Finsen Inst., Strandboulevarden 49, 

 COPENHAGEN, Denmark 



a. Radiation sensitivity of oocytes. Mus musculus (Rodentia) (in collabora- 

 tion with E. LEVY) 



b. Generation time and turnover time of cells in the vaginal and uterine epi- 

 thelium. Mus musculus (Rodentia) (in collaboration with E. LEVY) 



c DNA synthesis in oocytes. Mus musculus (Rodentia) (in collaboration 

 with E. LEVY and M. CRONE) 

 PETERS, Th. Dr.Med. — Anat. Inst, der Univ., Robert Kochstr. 6, MAR- 

 BURG/Lahn, Deutsche Bundesrepublik 

 a. Die Wirkung von Rontgenstrahlen auf befruchtete Eizellen und junge 

 Keimstadien, unter besonderer Beriicksichtigung der Wirkung kleiner 

 Strahlendosen und geringer Schaden. Triturus alpestris (Urodela) 

 PETRUCCI, D. — 1st. di Zool. dell'Univ., Viale Regina Elena 324 (al Policli- 

 nic) ), ROMA, Italia 



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