SUBJECT INDEX 



1 02 I 



threonine, aldolase reaction, 63 



— , conversion of — to a-ketobutyrate, 76 



thrombin, 691 



thymidylic acid, 91 



polynucleotide, formation, 91 1 



thymidine phosphorylase enzymes, 100 



— triphosphate, polymerization, 106 

 thymine, 11, 261, 288 



— , degradation, 118 



— requiring mutant of E. coli, 294 

 — , utilization, 99 



thymoma, 838 



thymoma-inciting action of X-rays, 861 

 thymus, effect of — on regeneration, 634 

 — , hypoplasia caused by estrogenic and 

 androgenic hormones and cortisone, 839 



— lymphosarcoma, 838 



— neoplasia induced by estrogenic 

 hormones, 839 



— RNA values in thymus lymphosarcoma, 

 906 



thyroid adenomata, 824 



— carcinoma, 824 



— hormone promoting regeneration, 632 

 , effects of on regeneration, 633 



— neoplasma induced by alteration of 

 thyroid function, 824 



— secretion influence on genesis and 

 growth of tumors, 846 



— in senescence, detoriation of follicles 

 and fibrosis, 964 



— tumorigenesis following hypothyroidism, 

 825 



— tumors, metabolism, 879 

 thyroidectomy, 824 



thyrotrope hormone, effect of — on re- 

 generation, 634 



thyroxin, 219 



— , activity increase of cytochrome c and 

 succinic oxidase by — , 634 



— , adrenal cortex stimulation by — , 633 



— increasing lactic dehydrogenase 

 activity, 634 



time axiom, 155 



tissue compatibility, 865 



— culture, effect of ionizing radiations, 558 

 -, effect of pH, 559 



■, effect of temperature on growth 



in , 556 



, effect of tonicity, 559 



, effect of ultraviolet irradiation, 558 



, effect of visible light, 558 



, formation rate of new cells 



in , 571 



, growth in , 546 



, mathematical theory of growth, 166 



tissue culture, measurements of growth, 567 



, metabolic measurements, 575 



, organized, 549 



, roller tube, 577 



volume, 574 



— water-content increase in regeneration, 

 609 



tissues growth, 163 



Titanotheria, 239 



tobacco mosaic virus, 284, 290, 437, 931 



— , RNA isolated from crystalline — , 262 



Tokophyra infusionum, 965 



tonicity, effects of — on tissue culture, 559 



Torulopsis kefyr, 205, 216 



— utilis, 55, 76 



T phages of £. coli, 276 



TNP "^ (triphosphopyridine nucleotide), 9, 



115 

 TNP ^ or DNP " reduction by plant 



chloroplasts, 33 

 TPNH, 12 



TPNH-nitrate reductase of Neurospora, 23 

 TPNH2 oxidation coupled with 



phosphorylation, 30 



— or DPNHj reoxidation by plant 

 mitochondria, 33 



tracer adenine, 576 



— alanine, 513 



— C, 796, 885 



— glycine, 501 



— iodine, 824 



— methionine, 504 



— nitrogen, 518, 740 



— phosphor, 576 

 uptake, 507 



— sulfur, 699, 700 



— urea, 740 



Tradescantia, staminal hairs of — , 797 



— wound meristem, 768 

 Tragididae, 251 

 transaldolase, 4, 5 



— reaction, donors and acceptors 

 in — — , 49 



transamidation, 728 

 transaminase, 78 



— apoenzymes in E. coli and Neurospora, 



85 

 — , apoenzymes catalyzing — reactions, 



85 

 transaminating agent, glutamine 



as , 82 



transamination, 86 



— reactions, a-ketoglutarate as amino 

 acid acceptor in , 84 



, pyridoxamine and pyridoxal 



phosphate as cofactors in , 84 



