147 



Biochemical change (cont'd.) 



in cell, 88 

 Biological inactivation 



induced by single event, 10 

 Bone marrow 



action against radiation, 142, 



146 



effect on DNA and RNA in 



thymus, 81 



immediate effect of radiation 



on respiration, 103 



Brain 



enzyme inhibition in vivo, 87 

 inhibition of citric acid for- 

 mation, 89 

 radioresistance of cells, 92 



British Journal of Radiology, 47, 



58 



Brookhaven National Laboratory, 



115 



Calcium 



adhesive qualities, 113 

 Cambridge University 



Department of Radiotherapeu- 



tics, 2 

 Carbohydrate metabolism 



altered by radiation, 87 

 Carbon-14 



selfirradiation of choline, 50 

 C arbon- 1 4 -adenine 



incorporation into adenine 

 and guanine molecules of 

 irradiated rats, 121 

 Carbon- 14 -dioxide 



excretion influenced by ace- 

 tate C^4, 107 

 Carbon- 14 -form ate 



incorporation into guanine, 

 adenine and thymine mole- 

 cules of irradiated rats, 121 

 Carbon-14-orotic acid 



incorporation into cytosine 

 and thymine molecules of 

 irradiated rats, 121 

 Carbon tetrachloride 



effects of irradiation, 39 

 Catalase, 32 



ionic yield, 27 



response to irradiation, 43 



Cells 



differential enzyme produc- 

 tion, 105 



effects of irradiation on 

 components, 86 

 effects of irradiation on 



Cells (cont'd.) 

 division, 56 



radiation-induced free radi- 

 cals, 42 



radioresistance in brain, 

 heart, kidney and thymus, 92 

 roles of DNA and RNA in 

 mitosis, 78 



Cell division 



blocking, 79 

 time, 80 



Charge migration, 19 



Choline 



ionic yield, 50 

 relation of G value to struc- 

 tural change, 50 



Chromosome breaks, 45, HO 

 protein chain skeleton, 111 

 synthesis, 112 



Chymotrypsin 



effects of irradiation, 34 



Citrate, 87 



Citric acid 



inhibited by fluoroacetate in 



vivo, 89 



synthesis after irradiation, 89 



Cobalt-60 



ionic yields, 50 

 Coenzyme A, 30 



ionic yields, 49 

 Coenzymes 



role in cellular response to 



radiation, 57 

 Cold Spring Harbor, 42, 114 

 Concentration 



role in radiation response, 32, 



49 



Cross-overs 



mechanism of radiation- 

 induced changes, 141 



Cross-section 



influence of temperature, 8 

 measured by alpha particles 

 or deuterons, 7 



Cysteine 



protective action, 35, 101 



Cytochrome 



reduction, 48 

 Cytochrome oxidase, 14 

 Cytoplasm 



effect of removal on cell 



division, 70 



Cytosine 



effect of radiation on light 



absorption, 36 



ionic yield, 38 



