SUBJECT INDEX 



1253 



Phospholipids, liver turnover, 988 



of plasma, 975 

 Phosphorus (P 32 ), 305, 476 

 effect of, 1057, 1058 

 on bone marrow, 926 

 on erythropoiesis, 1065 

 external irradiation by, 997 

 on intestine, 1127 

 on polycythemic rats, 1057 

 on testis, 1116, 1117 

 inorganic, of plasma, 974 

 radioactive, and mutation, 585, 587 

 toxicity of, 988, 1003 

 Phosphorus content, of blood, 1000 



of liver, 987 

 Phosphorus 32 -tagged erythrocytes, 970 

 Phosphorylation of fructose, 986 

 Photochemical reactions, 46, 193, 194 

 primary processes in, 195-196 

 sensitized, 195, 208 

 Photoelectric effect, 18, 20, 46, 69 

 Photoelectric threshold, 18 

 Photoelectrons, 20 



Photon-electron equilibrium, 150, 183-185 

 Photon flux per roentgen, 159 

 Photons, definition of, 19 



dosimetry of, 151-154, 177 

 Photoreactivation, 543, 569 

 Phycomyces, 922 

 Pigment, loss of, 997-998 

 Pigment granules, 1095 

 Pigment tissue, 1097 

 Pigmentation in skin, 1120, 1121 

 Pile, 14 



Pilocarpin, 576 

 Pisum, 776 



Pituitary-adrenal system, 1004-1005 

 Pituitary damage following prenatal 



irradiation, 877, 889 

 Pituitary gland, 991-994 

 Pituitary tumor, 1167-1169, 1171 

 (See also Radioactive elements) 

 Placenta, degenerative changes in, fol- 

 lowing irradiation, 901 

 Planck constant, 18, 30 

 Plankton, 445 

 Planorbis, 783 

 Plasma (see Blood plasma) 

 Plasma cells, 1103, 1116, 1133 

 effect of radiation on, 1033 

 Plasma proteins, iodinated, 970 

 Plasma volume, 961, 969 

 Platelet transfusion, 968 

 Platelets, effect on, of fast neutrons, 1043, 

 1048 

 of gamma radiation, 1050, 1051, 



1054-1056 

 of radioisotopes, 1056-1061 



Platelets, morphological changes in, 1062 



thrombi, 977 

 Pleura, 1130 

 Ploidy, 683 



Plutonium 239 , effect of, on bone, 1110, 1112 

 on intestine, 1127 

 on liver, 987, 1128 

 on ovary, 1118 

 on peripheral blood, 1060 

 on skin, 1122 

 on spleen, 1107 

 on testis, 1117 

 on thymus, 1105 

 toxicity of, 964, 970, 973 

 Pneumococci, 353 

 Point heat, 62 

 "Point sensible," 283, 284 

 "Poison" produced by radiation (see 



Toxins) 

 Poisons, effects of, on embryonic devel- 

 opment, 862, 907-908, 913 

 Poisson distribution law, 80, 133 

 Polar cap, 531 

 Polar force, 31 

 Polarization effects, 75 

 Pole cells, 534, 536, 538, 539, 545, 546 

 Pollen, 341-342, 936 

 Polonium sources, 320 

 Polycythemia, cobalt-induced, effect of 



phosphorus 32 on, 1065 

 Polydipsia, 971 

 Polymerization, 290, 291, 292 

 acetylene, 291 

 acrylonitrile, 257 

 Polymorphonuclear neutrophils (see 



Heterophils) 

 Polyphenol, 290 

 Polyploidy, 357-358, 1097 

 and radiosensitivity, 929 

 Poly sondes, 644 

 Position effects, 376, 380-383, 450, 487, 



502, 503, 505, 507, 516, 849 

 Positrons, 7 



atomic weight, 6 

 charge of, 6 

 penetration of, 98 

 sources of, 10 

 Posture abnormalities, 995 

 Potassium, 581 

 cyanide of, 576 

 excretion of, 989 

 of intestine, 984 

 permanganate of, 417, 552 

 . of plasma, 974 



in tissue, 972 

 Potency, 8, 61, 135-136 

 corpuscular radiations, 8 

 electromagnetic radiation, 18 



