SUBJECT INDEX 



1007 



nitrogen metabolism and growth, 712 



in relation to development, 716 



, relationship of and yolk storage, 



729 



— mustard, 517 



, DNA depolymerization by , 271 



in low dosage accelerating 



regeneration, 623 

 — , pathways of — assimilation, 81 



— transfer reactions and NH^ utilization, 88 

 nitrogenous waste products, evidence of 



catabolism of proteins, 736 

 N-methylnicotinamide in transmethylase 



reactions, 75 

 non-reproductive structures, 139 

 noradrenaline in transmethylase 



reactions, 75 

 (f-norleucine, vegetalizing effect, 505 

 normal growth, 222 

 normoblast, abnormal — mitosis in man, 



939 

 normogenesis, 319 

 notochord, 340, 347, 350 



— organizing action in regeneration, 646 

 notogenesis, 368, 427 



— , regular shifting from — to acrogenesis, 



446 

 notogenic induction, 443 

 notomerit, 368 

 Notonacta, 236 

 notoneuron, 368 

 noto-organizin, 478 

 N-phenyl maleimide as plant growth 



inhibitor, 785 

 nuclear composition, abnormal, 292 



— counts in tissue cultures, 572 



— density of brain tumor, 905 



— division, inner, 158 

 , unequal, 172 



— growth, 156 



— series, 156 



nucleases inhibiting protein synthesis, 278 

 nuclei, giant — in malignant cells, 159 

 nucleic acid, absorption spectrum, 294 



— antimetabolites inhibiting protein 

 synthesis, 937 



— autosynthesis inhibition by 

 analogues, 928 



— , cellular localization, 260 



— components and analogues as 

 antimitotic agents, 944 



— , de novo synthesis of — from precursors in 

 mouse sarcoma- 180, 908 



— formation, mechanism, 91 1 



— , inhibition of — de novo synthesis by 

 6-mercaptopurine, 934 



nucleic acid metabolism, of tumor cells, 906 

 in tumors, quantitative rapidity, 909 



— synthesis, 44, 289 



inhibited by fluorphenyl alanines, 



[3-3-thienylalanine and ethionine, 937 



nucleic acids, effects of abnormal nuclear 

 composition, 292 



— and embryonic development, 285 

 — , metabolism, 612 



— and nucleoproteins, in tumor cells, 902 

 in tumor metabolism, 910 



— and regulation of growth, 297 



— in relation to protein synthesis, 729 

 nucleo-cytoplasmatic, interactions related 



to protein formation, 514 



— ratio, 159 



nucleoprotein, dissociation by ribonuclease, 



937 



— as inductor, 434 



— , necessity of — synthesis for protein 



synthesis, 276 

 nucleoproteins, 138 



— and nucleic acids in tumor cells, 902 

 — , self-reproduction of structured — , 139 

 nucleoside, diphosphate kinase, 102 



— diphosphates as RNA precursors, 103 



— monophosphate kinase, 102 



— phosphorylase, 96 

 enzymes, 96 



in erythrocytes and brain tissue, 96 



nucleosides and nucleotides in tumor cells, 



909 

 nucleotide, synthesis, 91 



— transfer reactions, 38 



— transphosphorylation reaction, 28 

 nucleotides, conversion of purine 



ribosides to — , 97 



— and nucleosides in tumor tissues, 903 

 nucleus, and cytoplasm, interaction, 158 

 — , protein metabolism in — , 297 

 nutrients, effect of — and ions on plant 



growth, 780 

 nutrition, 554 



— and cancer, 865 



— and regeneration, 627 



Obelia, 612 



octapeptide, 728 



octanoate, CoA independent acyl 



activation of — , 40 

 Octopus, 604 

 odontoblasts, future — of the mesenchyme 



mounts, 459 

 Oedogonium, 749 



oestrogens, effects of — on regeneration, 632 

 old age, cell loss in — , 963 



