Stefan-Meier-Str. 8, 78 FREIBURG i.Br., B.R.D. (Germany) 

 a Differentiation of primordia analysed by the use of teratogenic substances. Cavia cobaya 



(Rodentia) 

 POLANI, P. E. M.D., Prof. - Paediat. Res. Unit, Guy's Hosp. Med. Sen., St. Thomas St., LONDON 



SE1 9RT, England 

 a Male and female meiosis. Mus spec, Acomys spec, Microtus spec. (Rodentia), Homo sapiens 



(Primates) 

 POLEZHAEV, L. V. Dr.biol.sci., Prof. - Inst, of Developm. Biol., Acad, of Sci. of the USSR, Vavilov 



St. 26, MOSCOW 1 17334, U.S.S.R. ISDB 



a Regeneration of cranium bones. Mus domesticus, Rattus norvegicus, Oryctolagus cuniculus, Felis 



domestica, Canis familiaris (Mammalia) 

 b Regeneration of myocardium. Rattus norvegicus, Oryctolagus cuniculus, Felis domestica, Canis 



familiaris (Mammalia) 

 c Restoration of regeneration capacity of limbs after x-irradiation. Ambystoma mexicanum 



(Urodela) (with N. A. TEPLITZ and S. J. TUCHKOVA) 

 d Physiological regeneration of the brain. Felis domestica, Rattus norvegicus (Mammalia) 

 POLGE, C. Ph.D. - A.R.C. Unit of Reprod. Physiol. & Biochem., Anim. Res. Station, 307 



Huntingdon Rd., CAMBRIDGE CB3 OJQ, England, 

 a Factors influencing fertilization and early embryonic development (effects of age of gametes, 



administration of drugs and hormones, in vitro treatments and transplantations). Sus scrofa 



(Artiodactyla) 

 POLTEVA, Mrs. D. G. Cand.biol.sci. - Dept. of Embryol., Leningrad State Univ., Mendeleevsky 



St. 5, 199164 LENINGRAD, U.S.S.R. 

 a Morphogenesis during somatic embryogenesis. Obelia geniculata, O. flexuosa, O. lovenii, Coryne 



lovenii (Hydrozoa) 

 PONTIER, J. Dr.es Sci. - Lab. de Biomet., Sect, de Biol. Gener. et Appl., Univ. de Lyon I, 43 Bd.du 



1 1 Novembre 1918, 69621 VILLEURBANNE, France 

 a Analyse factorielle appliquee a l'etude de la morphogenese. Myzus persicae (Aphididae, 



Heteroptera) 

 b Analyse multivariee 

 POPOV, V. V. Dr.biol.sci., Prof. - Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, 



MOSCOW 117234, U.S.S.R. 

 a Induction of cornea. Lymnaea stagnalis (Gastropoda) 

 b The influence of conditional stimulation of the retina on Wolffian lens regeneration. Triturus 



taeniatus (Urodela) 

 PORCELLI, Miss F. Dr. - Inst, of Histol. and Embryol., Univ. of Pavia, Piazza Botta 10, 



27100 PAVI A, Italy 

 PORTMANN, A. Dr.Phil., Prof. (Emer.) - Zool. Anstalt der Univ., Rheinsprung 9, 4051 BASEL, 



Switzerland 

 POSINOVEC, Mrs. J. M.D., D.Sc, Prof. - Inst, of Histol. and Embryol., Fac. of Med., Univ. of 



Zagreb, Salata 3, P. O. Box 166, 41001 ZAGREB, Yugoslavia 

 a Anomalies of spermatogenesis due to disorders in testis development. Homo sapiens (Primates) 

 b Appearance and pattern formation of reticulin fibers during ontogenesis of the testis. Same 



species as a 

 c Embryonic development of the parotid gland. Same species as a 



POSPISIL, M. - Dept. of Anat., Freie Univ., Kon.-Luisestr. 15, 1 BERLIN 33, B.R.D. (Germany) 

 a Teratology and biometrics of malformations. Mus musculus, Rattus spec. (Rodentia) 

 POURHADI, R. M.D. - Lab. d'Histol.-Embryol., Fac. de Med., Bd. Winston Churchill, B.P. 38, 63 



CLERMONT-FERRAND, France 

 POURREAU (SCHNEIDER), Mrs. N. M. Dr.es Sci. - Lab. d'Embryol. Exper. du Coll. de France et 



du C.N.R.S., 1 1 Place M. Berthelot, 75 PARIS Ve, France ISDB 



a Testicular interstitial cell tumour (ICT) grafted under the kidney capsule: 1. Development in this 



heavily vascularized region; 2. Attempt to masculinize the foetus by grafting ICT during 



pregnancy; 3. Injection of ICT-suspension into the tail vein of castrated males. Rattus norvegicus 



(Rodentia) 

 b Differentiation of Friend leukemia cells in the presence of DM SO (dimethylsulfoxide) in tissue 



culture. Mus musculus (Rodentia) 

 POURTOIS, M. M.D., Lic.Sc.Dent. - Lab. d'Anat. et d'Embryol. Hum., Univ. Libre de Bruxelles, 97 



rue aux Laines, 1000 BRUXELLES, Belgium 

 a Normal and abnormal closure and fusion of primary and secondary palate (tissue culture, 



histochemistry, histology). Rattus norvegicus, Mus musculus (Rodentia), Homo sapiens 



(Primates) 

 b Morphogenesis and cytogenesis of tooth buds. Rattus norvegicus, Mus musculus (Rodentia) 

 POUWELS, Miss E. Biol.drs. - Dept. of Anat. and Embryol., Univ. of Nijmegen, Geert Groote- 



plein N.21, NIJMEGEN, Netherlands 

 a Development of the cerebellum (light microscopy, electron microscopy). Salmo irideus 



(Teleostei) 

 PRAT, Miss M. Ph.D. - Cell and Molec Biol. Lab., Dept. of Human Anat., Univ. of Torino, Corso 



M.d'Azeglio 52, 10126 TORINO, Italy 

 a Cell membrane differentiation; immunochemistry of surface macromolecules. Mus muscules 



(Rodentia) 

 PRATT, C. W. McE. M.D. - Anat. School, Univ. of Cambridge, Downing St., CAMBRIDGE 



CB2 3DY, England 

 a Development of skeletal tissue. (Mammalia) 



79 



