SUBJECT INDEX 



1247 



Lymphocytes, 1101, 1103, 1104, 1133 

 effect on, of acute radiation, 1031-1036 

 fast neutrons, 1042, 1043 

 gamma radiation, 1049-1052, 1055 

 morphological changes, 1062, 1063 

 radioisotopes, 1056-1060 

 Lymphoid tissue, indirect action, 960 



nucleic acids, 929 

 Lymphoma after irradiation, 933 

 Lymphopenia, 922, 935 

 Lymphopoiesis, effect on, of appendix 

 shielding, 1063 

 of spleen shielding, 1063 

 and spleen, 1106 



M 



Macrophages, 1100, 1103 



Maize, 363, 410, 450, 454, 457, 531, 533- 



536, 540, 560 

 Malformations (see Morphological 

 changes following irradiation) 

 Malonate, 946 

 Mammalian coat color, 461 

 Mammals, 415 



radiation effects, on embryo, 861-918 

 genetic, 825-859 

 on reproduction, 826-831 

 (See also Radiation) 

 Mammary gland, 1117, 1123 

 during pregnancy, 1123 

 suppression of lactation, 1123 

 Man, 410 

 LD 50 for, 930 



mutations in, 419, 583, 854-856 

 radiation effects, 338, 339, 919, 966, 

 998, 999, 1005 

 on development, 862, 908-911 

 radiation hazards, 854-856, 910, 913 

 Manganese, 946 

 Maps, linkage, 356 

 Mass number, 27 

 Mast cells, 1100, 1105, 1107 

 Maternal body, role of, in radiation effect 

 on mammalian embryo, 861, 900- 

 901, 911, 912 

 Mature follicles of ovary, 1117 

 Mature sex cells, 1133 

 Mean square deviation, 80 

 Mechanism, of radiation effect on em- 

 bryo and fetus, 900-908, 913 

 of radiobiological action, 327-328 

 Megakaryocytes, 1099, 1106, 1108 

 Meiosis, 354 

 Meiosis-meiotic cycle, 640, 642-644, 653, 



654, 689, 690 

 Melanoblasts, 998 



Menadione, 551, 552 



Meninges, carcinogenesis in, 1156 



Mercaptocarboxylic acids, 479 



Mercaptosuccinate, 942, 945 



Mercuribenzoate, 946 



Mercury, 946 



Mercury vapor, elementary processes in, 



199, 200, 202, 206-208, 215 

 Mesons, 3, 59 

 Mesothelium, 1130 

 Metabolic activity, 922 

 Metabolic processes and gene mutation, 



418-421 

 Metabolic rate and radiosensitivity, 931, 



935-937 

 Metabolism, radiation effects on, 1000- 



1002 

 Metals, heavy, and mutation, 574 

 Metaphase, 628, 632, 638, 643, 659, 662, 



689, 690, 928 

 Metaphysis of bone, 1108, 1109, 1111 

 Metastasis facilitated by irradiation, 



1174-1175 

 Methemoglobinemia, 941 

 Methionine, 942, 945 

 Methyl-3: 12-diacetoxy-7-keto cholanate, 



291 

 Methylacrylate, 291 

 Methylcholanthrene, 422 

 Methylene blue, 289, 945 

 Methylmethacrylate, 291 

 Microcephaly following prenatal irradia- 

 tion, 880, 889, 909 

 Micrococcus (Staphylococcus) aureus, 537, 



545, 548-552, 562 

 Microglia radioresistance, 995 

 Microphthalmia following prenatal irra- 

 diation, 879, 883, 887, 888, 902, 907, 



909 

 Microspores, 341 



chromosome aberrations in, 715 

 Microwaves, 3, 20 

 Midbrain radiation exposure, 980 

 Migration of energy, 202, 233-234, 246n., 



248n., 249 

 Milk agent in mammary tumor induction, 



1173 

 Miners, carcinogenesis in, 1177-1179 

 Mitochondria, 1095 

 Mitosis, 289, 354, 1096, 1133, 1135 

 abnormal, 628-630, 632, 646, 647, 664, 



1092 

 cessation of, 1096 

 inhibition of, 322, 325, 331-333, 335- 



336, 340, 561, 1092 

 multipolar, 1135 

 potential, 1133 



