SUBJECT INDEX 



IOI5 



pyrimidine, aminofumaric acid as precursor 



of— 98 



— composition of DNA in tumor tissue, 902 



— nucleoside phosphorylase, 100 

 — • analogues, 930 



— synthesis, de novo, 98 

 pyrithiamine as antimetabolite, 806 

 pyrogenic polysaccharides, 619 

 pyrophosphate transfer, reactions, 35 



to acceptor compounds, 37 



pyrrole synthesis, succinyl-CoA and 



glycine condensation in , 89 



pyrroline-5-carboxylic acid, 1 1 

 pyruvate metabolism in tumor tissues, 889 

 — , oxidation of — to acetyl-CoA, 5 

 pyruvate-2-i'*C metabolic patterns for — in 



various tissues, 890 



quantitative theory of morphogenetic 



gradients, 600 

 quinacrine, 12 

 quinic acid, 10 

 quinolinic acid, 116 

 quinone, 13 



— reductase, 24 

 quinoxalins, 626 



radioactive chemicals inhibiting 



regeneration, 624 

 radiothyroidectomy-induced pituitary 



tumors, 824 

 Rana clamitans, 615 



— esculenta, 292 

 — fusca, 292 



— , lethal — combinations, 292 



— pipiens, 292, 498, 515, 720 



— temporaria, 379, 414 



— temporaria, seasonal growth of oocyte of 



— _— , 717 

 reacting, influence of age on the — ability 



of the ectoblast, 41 1 

 reaction rates, principle of harmonized 



, 228 



reactions, reversible, 144 



reactor and inductor, 357 



— , intimate changes, 479 



— , receptive, 368 



— , Urodele ectoblast as — , 444 



reactors, biochemical modifications of — , 



419 

 reaggregation, 42 1 

 reattachment of epithelium, 680 

 reciprocal induction, 456 



— phenomena, 153 

 reconstitution process, 593 

 redistribution of cells, 593 



redox potential, maintenance of the — — 



of the cell, 9 

 redox potentials, 9, i 7 

 reductase, cytochrome m, 26 

 — , dehydroascorbic, 25 

 — , glutathione, 25 

 — , glycolic, 22 

 reduction-potential increase in 



regeneration, 608 

 reductive carboxylation, enzymes of the — 



—,33 

 regenerate, organization of a — , 600 

 — , visible differentiation in a — , 600 

 regenerating nerve-fiber, 603 



— tissues, chemical factors produced by — 

 -, 636 



regeneration, 214 



— , acceleration of — , by warmth, 623 

 — , action of adrenal corticoids on — , 630 

 — , bone androgens promoting — , 632 

 — , diffusing factors in • — , 645 

 — , distribution of powers of — , among ani- 

 mals, 590 

 — , effect of gonadal hormones, 632 

 — , effect of oestrogens, 632 

 — , function of alkaline phosphatase 



during — , 613 

 — , (/-glucosamine inhibitor of — , 619 

 — , glucose and glycogen energy sources 

 for—, 618 



— and growth, 588 



— , hexosamine liberated from 



mucoproteins in — , 621 

 — , hormones in the control of — , 63 1 

 — , hydration of tissues in — , 62 1 

 — , hyperglycaemia and 



glyconeogenesis in R-phase of — , 618 

 — , increasing of free SH-groups during 



R-phase of — , 615 



— inhibiting chemicals, 626, 627 



— inhibition by radioactive chemicals, 624 

 — , initial rate, 603 



— , inorganic cations in — , 622 

 — , innervation as essential condition, 528 

 — , instantaneous rate, 603 

 — , internal factors in the control of — , 627 

 ■ — , local factors, 646 

 — , metabolic changes during — , 608 

 — , metabolism of sulphur compounds in — , 

 615 



— by morphallaxis in young Clavellina, 628 



— and nerve supply, 640 



— and nutrition, 627 



— , phosphatase activity in — , 614 

 — , physiological, 215, 589 



— of the physiological tip, 756 



