1264 



RADIATION BIOLOGY 



Vicia faba, 363, 391, 558, 577, 589, 

 736, 744, 748, 755, 774, 776-778, 782, 

 784, 786, 799, 801, 811, 929, 935, 940, 

 941 

 chromosome aberrations, 306 

 Vinyl acetate, 291 

 Virus, 527 



inactivation of, 324, 329-330 

 Visceral abnormalities and retarded devel- 

 opment following prenatal irradia- 

 tion, 886, 888, 896-898 

 Viscosity, 289 

 anomalous, 289 

 of cytoplasm, 1095 

 of gelatin solutions, 295 

 Vitamin- A absorption, 986 

 Vitamin C, 942, 945, 967, 975, 990 

 Vitamin deficiency, 934 

 Vitamin K, 967 

 Vitamin P, 968 



Vitamins, 934, 965, 967-968, 986 

 Vomiting, 969, 982, 984 



W 



Water, 256, 273 



"activated," 284, 937 



and cell organization, 273 



effects on, 324, 328 



extracellular, 1001 



influence on high-energy mutagenesis, 



555-564 

 metabolism, 969 

 "pure," 285 

 radicals from (see Radicals from 



water) 

 radiodecomposition of, 750 

 role of, in radiation effects, 244n., 273, 

 274 

 on chromosomes, 751^". 

 and radiosensitivity, 754 

 Water content, effect on radiosensitivity, 

 927 

 of organs, 1001 

 of tissues, 971 

 Wave length, 16 

 Wave length effect, 137 

 Weeds, noxious, 444 

 Weight, at birth (see Body size) 

 loss of, 984 

 of organs, 1001 

 Wheat seedlings, 935 

 Whole-body irradiation, 1136 

 of pregnant females, 864, 901 

 (See also Embryo ; Fetus) 

 Wines, 445 



X radiation, anemia induced by, bio- 

 logical effectiveness of fast neu- 

 trons and, 1048 

 comparative effect of fast neutrons 

 and, 1044 

 effect of, on adrenal glands, 1131 



in mammalian prenatal develop- 

 ment, 861-918 

 effect on peripheral blood, of acute 

 exposure, 1031-1041 

 of chronic exposure, 1047-1049 

 (See also Bone marrow) 

 effect of tissue shielding on injury in- 

 duced by acute exposure, 1068-1073 

 genetic effects, 629 



in mammals, 825-859 

 mitotic inactivity, 628 

 primary effect, 628, 694 

 secondary effects, 628, 629 

 X-ray fluorescence, 47, 69, 107 

 X rays, 3, 14 



absorption of, 49, 107, 108 

 absorption coefficient, 103, 110 

 asters, induced supernumerary, 803 

 build-up, 108 



chromonema effects, 801, 802 

 chromosome breakage, 801 

 chromosome change in form, 801 

 chromosome stickiness (see Chromo- 

 some stickiness) 

 crystal diffraction, 105 

 cytosome effect, 803 

 deamination by, 265-270 

 definition of, 20 

 distribution of, 86 

 effect of intensity of, 727 

 effects of, on chromosomes, 723Jf. 

 effects on, of modifying factors, 736jf. 

 electronic equilibrium of, 111 

 emission, 44 

 energy distribution, 109 

 energy release in tissues, 764, 786 

 lethal effect on cells, 805-810 

 measurement of, 318-319 

 mitotic effects, 768-791, 794-798 



(See also Mitosis; Mitotic effects) 

 penetration of (see Penetration) 

 probability of different effects, 70 

 production of, 23 



relation of aberration yield to dose, 723 

 relative efficiency, 732 

 scattered, 107 

 secondary, 106 

 spindle suppression, 804 

 thymonucleic acid depolymerization, 

 800, 801 



