[0i6 



SUBJECT INDEX 



regeneration of planarians, stimulating 



effect of RNA, 298 

 — , promotion of — , by thyroid hormone, 



632 

 • — , quantitative aspects, 602 

 — , respiration and carbohydrate 



metabolism, 618 

 — , restitutive, 215 



— and temperature, 623 

 — , unit, 608 



— , upper limiting temperature — in poiki- 

 lotherms, 623 



— and vascular system, 644 



— , water metabolism in — , 620 

 regenerative organizing action of muscle, 



cartilage, bone, notochord and 



endoderm, 646 



— potencies, 141 



— powers, local variation of 

 quantitative , 647 



— • — , taxonomic differences, 647 

 regenesis, 588 

 regression, 589 

 — , allometric, 142 

 regulation, 593 



— of growth, and nucleic acids, 297 

 — , phenomena, 214 

 rejuvenation in Protozoa, 597 

 relative, eclosion length, 608 



— growth, 224 



remodelling of the wound, 682 

 renal tumors induced by estrogenic 



hormones, 837 

 replacement-rate, specific, 606 

 reproduction, growth as identical — , 140 

 re-regeneration, 593 

 resorbing surfaces in anabolic processes, 



180 

 resistance, phase of — of GAS, 610 

 respiration, and anabolic processes, 180 

 — , impaired — of tumors, 884 



— in tumor cells, 881 



— of isolated tissues, 185 



— in plant cells, 787 



— rates in plant cell division, 770 

 respiratory apparatus, connection of 



metabolic types with types of , 188 



— balance and DNA or RNA synthesis, 888 



— catalysts, 25 



— chain of mitochondria, 29 



— inhibitors, 576 



— quotient as criterion of malignancy, 882 

 retardation, 248 



rete pegs, 677 

 reticulin, 670 

 — , layer of — fibers, 675 



reticulocytes, glycine incorporated into 

 RNA of — , 296 



— protein, amino acids incorporated into 

 , 296 



reticulo-endothelial cells in granulation 



tissue, 689 

 reticulo-endothelioma-hepatic histocytoma, 



846 

 retina, 10 

 retinal layer, action of on the epiblast, 



450 



, formation, 452 



retinene, 10 



reversibility, principle of microscopic — , 154 



rhabdomyosarcoma, induced by administra- 

 tion of peanut oil subcutaneously, 860 



rhizopterin, 1 19 



Rhizopus, 62 



— suinus, 760 

 rhodanase, 527 



— in rat hepatoma, 914 

 Rhodospirilluni, 40 

 rhombencephalon, 375, 407 

 — , presumptive, 389 

 Rhynchelmiis, 644 



ribitol, 10 

 riboflavin, 1 13 



— accelerating regeneration, 630 



— content of adenocarcinoma, 915 

 of mammary adenocarcinoma, 915 



— inhibitor of tumor-inciting action of 

 butter yellow, 862 



ribofuranosyl derivative of 6-methylpurine 



as mitose inhibitor, 936 

 of 6-methylmercaptopurine, as 



mitose inhibitor, 936 

 ribofuranosyl as mitose inhibitor, 935 

 g-[i-D-ribofuranosylpurine, as chromosome 



breaking agent, 941 



— as mitose inhibitor, 935 

 ribonuclease, 263, 278, 611 

 — , antimitotic activity, 282 



— , biochemical effect of — on various cells, 



279 



— in chemotherapy of cancer, 282 



— concentration in resting and growing 

 cells, 298 



— , incubation of inductors with — , 434 

 — , inhibition of protein synthesis in — 



treated roots, 280 

 — , interference of — with centrosomes and 



spindle development, 283 



— interference with virus multiplication, 

 284 



— , rate of — activity in hepatomas, gi i 

 ribonucleic acid, see also RNA 



