1256 



RADIATION BIOLOGY 



Radiation injury, 553, 934, 1005 



mechanism of recovery from, 1069, 



1074-1075, 1079-1082 

 modification of, 274-276, 1064-1077, 

 1079, 1080 

 by absence or presence of oxygen, 



275 

 by combined prophylactic and thera- 

 peutic measures, 1079, 1080 

 by prophylactic measures, 579, 1064- 

 1068 

 cysteine, 1067 

 estradiol, 1066, 1067 

 glutathione, 1067 

 H0 2 , 274, 275 

 H 2 2 , 274, 275 

 H 2 S and ammonia, 276 

 induced hyperplasia, 1064-1066 

 oxygen deprivation, 275, 1067 

 sulfhydral compounds, 1067 

 by therapeutic measures, 1068-1077 

 blood transfusions, 1081, 1082 

 embryo mash, 1074 

 heterologous bone-marrow injec- 

 tions, 1075 

 heterologous transplants, 1075 

 homologous bone-marrow injec- 

 tions, 1074, 1075 

 parabiosis, 1075, 1076 

 spleen implants, 1073-1076 

 spleen shielding, 1068-1073 

 splenectomy, and spleen implants, 

 1073, 1074 

 and spleen shielding, 1077-1081 

 tissue shielding, 1069-1073 

 neurological, 967 



in subsequent generations, 432-435 

 (See also Chromosome aberrations; 

 Morphological changes following 

 irradiation; Mutations) 

 Radiation length, 96 

 Radiation quantum (photon), 19 

 Radiation syndrome, acute, 960, 1005- 

 1008 

 treatment, 1006 

 Radiationless transition, 34-35 

 Radiative collisions, 42, 49, 50, 63, 95 

 Radicals from water, by irradiation, 

 256-257, 262, 270, 750 

 number of, 270 



specificity of reaction of, 265-268 

 Radio waves, 3, 14, 20 



and mutation, 588 

 Radioactive elements, 13 



artificial isotopes (P 32 , I 131 , Au 198 , Mn 62 , 



Ga 67 , Sr 89 " 90 ), 1158 

 bone seekers, rare earth, 1160 

 transuranic elements, 1160 



Radioactive elements, carcinogenesis by, 

 Au 198 , 1158, 1165, 1167, 1184 

 I" 1 , 1167, 1171 

 ionium, 1158 

 mesothorium, 1156, 1157 

 P 32 , 1148, 1158, 1160, 1166, 1177 

 Po 210 , 1148 



Pu 239 , 1148, 1159, 1160, 1177 

 Ra 226 , 1147-1148, 1151, 1153-1158, 



1160, 1177 

 radon, 1155, 1158, 1176-1177, 1178, 



1180, 1183 

 Sr 89 " 90 , 1160, 1185 

 thorium dioxide (thorotrast), 1155, 

 1157, 1158, 1167, 1177, 1179, 1184 

 uranium, 1177 

 Y 91 , 1159, 1177, 1184 

 maximum permissible amount of [Ra 226 , 

 Pu 239 , Sr 89 " 90 (+Y 90 ), Po 210 , H 3 , 

 C 14 , Na 24 , P 32 , Co 60 , I 131 ], 1148 

 strontium, 586 

 sulfur, 585 



(See also Radioactive isotopes) 

 Radioactive istopes, 1093 



artificial (see Radioactive elements) 

 chromosome aberrations produced by, 



733 

 effect of, on adrenal gland, 1132 

 on bone, 1110 

 on bone marrow, 1100 

 on cartilage, 1113 



on gastrointestinal epithelium, 1127 

 injected into pregnant females, 864, 



899-900 

 on kidney, 1128 

 on lymphatic tissue, 1104 

 on osteogenic sarcomas, 1111 

 on ovary, 1118 

 on skin, 1122 

 on spleen, 1107 

 on testis, 1116 

 on thymus, 1105 

 on thyroid, 1132 

 (See also specific elements) 

 Radioactive transformations, 13 

 Radiobiological action, mechanism of, 



327-328 

 Radiobiological additivity, 326 

 Radiobiology, primary processes in, 194- 



195, 197 

 Radiochemical events in biological sys- 

 tems, 937 

 Radiodermatitis, 1151, 1175-1176 

 Radiomimetic agents, 285, 922, 937 

 Radioresistance, 1092, 1133, 1135 

 acquired, 1127, 1136 

 induced, 934-944 

 of lung, 1129 



