PLEURA 



see Body cavities 



POLAR BODIES 



see Egg(s) 



POLARITY 



see Gradient (s); Symmetry 



POLE CELLS 



see Germ cells (primordial) 



POLYEMBRYONY 



experimental, orientation. Aves LUTZ 



-, Teleostei LUTZ 



POLYMORPHISM (insects, including caste 

 determination) 



caste determination, Hymenoptera KERR 



RoSELER 



— — . seasonal variations. Hymenoptera ZUCCHI 

 diploid drones, Hymenoptera WOYKE 

 environmental factors. Homoptera LEES 

 Hymenoptera CASTIGLI 

 queen determination, biochemistry of 



queens & workers. Hymenoptera REMBOLD 



— determining protein. Hymenoptera MESTRINER 



— — substance in royal jelly. 



Hymenoptera REMBOLD 



wing. Homoptera KISIMOTO 



POLYPLOIDY 



cytochemistry, Turbellaria BENAZZI 



DNA content. Anura LAVALLE 



experimental, meiosis. spermatogenesis, 

 maturation, embryogenesis. Lepidoptera 



ASTAUROV 



VEREISKAVA 



role in eye differentiation. Aues KVINIKHIDZE 



— — transformation of pigment epithelium 

 into neural retina, Anara, Rodentia, 



Urodela STROEVA 



triploid intersexuality by thermal 



treatment, Diptera LAUGe 



Turbellaria BENAZZI 



POLYSACCHARIDES 



see Carbohydrate! s) 



POSTEMBRYONIC DEVELOPMENT 



see Development (postembryonic. fetal) 



POTENCY 



see Embryology (experimental) 

 see also Determination: Organization; 

 Regulation 



PREGNANCY 



see also Embryo-maternal relationships; 



Placenta(tion) 

 blood, amniotic & intervillous space 



pressures. Primates RAMSEY 



corpus luteum. factors controlling life, 



Rodentia ORSINI 



cortisone. Rodentia MERCIER 



cytochemistry of uterus, Marsupialia PADYKULA 

 decidualization. Mammalia ORSINI 



difibetes, experimental. Mammalia MERCIER 



TUCHMANN 

 -, -, Rodentia WELLS 



— . morphology of placental villi, Homo HORKY 

 early. Rodentia WILSON 



effects of chemicals. Lagomorpha, Rodentia 



HARPER 

 — — ultrasonation. Rodentia NEBEL 



Elasmobranchii GILBERT 



enzymes in maternal blood. Homo ROBINSON 



immunological aspects, Rodentia JAMES 



immunology, Rodentia KETCHEL 



maintenance, effect of deleterious compounds. 



Rodentia WEISHEIT 



pseudo-. decidualization. Mammalia ORSINI 



— . induction. Rodentia HADDAD 



virus. Rodentia ROUX 



Teleostei CHAMBOLLE 



uterine vessels. Rodentia ORSINI 



PRIMITIVE STREAK 



see also Blastoderm 



fate of different parts, tracer study. Aves 



NICOLET 

 node region, regulation, Aves SHOGER 



regional inductive & regulative capacities. 



Aves GALLERA 



role in body formation, Aves. Mammalia VACEK 



PRIMORDIAL GERM CELLS 



see Germ cells (primordial) 



PROLIFERATION 



see Mitosis 



PRONEPHRIC DUCT 



see Urogenital system 



PRONEPHROS 



sec Kidney(s) 



PROSPECTIVE 



see Embryology (experimental) 



PROTEIN (S) 



active groups, primary induction, Urodela AVE 

 a-2-macroglobulin. development 6 regene- 

 ration. Rodentia HEIM 

 arresting development by injection, Anura 



KIMMEL 

 basic, electrophoresis & immunophoresis. 

 early development, Echinoidea. Tunicate 



^ DAVENPORT 



— . qametagenesis & regeneration. 



bligochaeta LECHENAULT 



— . oogenesis, autoradiography, electron 



microscopy. Echinoidea SANCHEZ 



basic, oogenesis 6 early development. 



Echinoidea ^^9^fl'^A^ 



blood, genetics & physiology. Insecta EOELHAAf 

 brain ANDERSON 



brain. Aves. Rodentia SZeKELY 



cell-specific, control of synthesis ^^^m 



central nervous system. Aves McCALLION 



changes in development. Anura. Echinoidea 



chromosomal. Aves HUANG 



chromosomes, puffs induced by RNase. 



Diptera ^°^^J^k 



-. salivary gland. Diptera KATO 



contractile. Amphibia MUCHMORE 



_, Amphibia. Echinoidea. Teleostei ^^^^^^^^^^ 



cytochemistry, electrophoresis CONKLIN 



differentiation, Amph.bia. Insecta DUSPIVA 



— . cytochemistry, electrophoresis. Urodela 



GASSER 

 embryonic cells, subcellular components. 



Amphibia MASUI 



eye lens, cristallins. Anura McDEVITT 



eye lens, electrophoresis. Rodentia ^^^^^^^^^ 



. regulation. Anura. Aves CAMPBELL 



^ CLAYTON 



TRUMAN 



. Vertebrata BRAHMA 



DOORENMAALEN 

 glyco-. embryo. Mollusca. Tunicata D'ANCONA 

 -. in yolk. Aves NONAMI 



haemolymph. metamorphosis, biochemistry, 



Hymenoptera LENSKY 



— . reproductive cycle. Crustacea HORN 



heme DALLMAN 



induction, biochemistry. Aves ^,,,, 



Mammalia. Urodela SASAKI 



interaction with nucleic acid, early .„,^„c. 



development. Echinoidea IMMERS 



Lepidoptera EICHEV 



metabolism, early stages, radio-isotopes, .,,,.. 



Orthoptera SCHWALM 



metabolism, effect of SH & SS compounds. 



Urodela ^^^i^JA^^ 



■—, egg maturation. Amphibia HANOCQ 



— . explanted embr>'0. relation to growth 



& differentiation. Aves KLEIN 



-. lethal hybrids. Amphibia METAFORA 



mitotic apparatus, egg. Echinoidea ^r^\ 



morphogenesis , , , „ r-iAMMCT-rr 



mucoproteins in foetal skin. Homo GIANNETTI 

 nucleoproteins. atypical, larval development. 



Diptera RASCH 



oogenesis E) early development. Echinoidea 



GOULD 

 organ- 6 stage-specific antigens. ,,v»-7/->i/ 



Vertebrata VYAZOV 



quantitative cytochemistry, induction & 



differentiation. Vertebrata '^^}^, 



regeneration. Amphibia ANTON 



248 



