Subject Index 



313 



Chromosomal abberations 



in Drosophila, 241 



induced by chemical mutagens, 



239-251 

 induced by radiation, 227-228, 



239-251 

 in Tradescantia microspores, 241 

 Chromosome set, and amount of 



deoxyribonucleic acid, 200 

 Chromosomes, translocation in, 148 

 Chymotrypsin, radiation on, 39 

 Citric acid cycle and oxidative 



metabolism, 42 

 Citric acid metabolism, effect of 

 fluoracetate poisoning on, 

 221 

 effect of radiation on, 221 

 Coenzyme A, activity and irradia- 

 tion, 42-43 

 and inhibition of cell respiration, 



97-99 

 role of nucleus in synthesis of, 5 

 Coenzyme level in X-ray cataract, 



43 

 Coenzymes, activity in irradiated 



tissues, 38-56 

 Colchicine, and mitosis in regenerat- 

 ing liver, 236-237 

 Colloids, radiation on, 35, 269 

 Corticoid output, decreased by 



radiation, 45-46 

 Corticosterone synthesis, de- 

 creased by radiation, 45 

 Cysteamine, effect on respiratory 

 centres, 137 

 derivatives, protective ability of, 



136 

 protection by, 121-123, 124 

 Cytochrome, a^ and inhibitors of cell 

 respiration, 108 

 h and radiation, 42 

 c and depression of oxidative 



phosphorylation, 86 

 c and radiation, 42, 86-88, 111 

 c and rate of oxygen consumption, 

 96 

 Cytoplasmic damage by irradiation , 

 260, 263, 265 

 network, structure, 161 

 structure, in relation to metabolic 

 activities, 3-20 

 Dead cells, effect on metabolism of 



survivors, 203 

 Dehydrogenase systems, and ex- 

 traneous agents, 100 



Deoxyribonuclease, and nucleo- 

 protein inactivation, 159 

 inhibitors of, 274 

 on enzyme synthesis, 189 

 on protoplasts, 190-191 

 stimulation of amino acid incor- 

 poration by, 186 

 Deoxyribonucleic acid, as genie 

 substance, 65-66 

 chemical effects of radicals on, 



61-62 

 constancy per chromosome set, 



209-210 

 constitution. Crick - Watson 



model, 59, 65, 70 

 digestion on, 178-179 

 heat on, 60 



in dying cells, as pool for re- 

 generating cells, 237 

 metaboHc stability of, 215-222 

 reaction with nitrogen mustards, 



67 

 specificity, and effects of radia- 

 tion and organic peroxides, 

 275-297 

 synthesis, and delay in mitotic 

 cycle, 199-203 

 and enzyme activity, 39 

 cause of inhibition of, 203-205 

 failure of, 53 

 in absence of mitosis, 90 

 in ascites tumour, 202, 204, 



213 

 in bean roots, 202, 204, 205 

 in mammalian tissues, 198- 



199, 202, 204 

 in regenerating liver, 205, 225, 



227-236 

 radiation on, 196-206, 307 

 recovery after irradiation, 131— 

 132, 203 

 transfer from dead to living cells, 



214-215 

 urea on, 75 

 Dilution effect, 25-26, 27, 28, 33, 



305 

 Dinitrophenol, as metabolic in- 

 hibitor, 253-254 

 Diphosphopyridine nucleotide, 

 and identification of pace- 

 maker steps, 104 

 and inhibition of cell respiration, 



97-99 

 and rate of oxygen consumption , 

 96 



