SUBJECT INDEX 



1025 



Wehnelt's test, 772 

 weight-growth curve, 180 

 Weismann's theory of determinants, 172 

 Weiss' coaptation theory, 681 

 whole-body, neoplasms following — 

 X-irradiation, 848 



— X-irradiation inducing ovarian and 

 hemopoietic neoplasms, 848 



— , regenerates oi Planarians, 601 

 Wocklumeria sphaeroides, 2 1 5 

 Wolffian duct, 463 



— regeneration, 534 



wound area, planimeter determination, 677 



— closure, 669 



— contracture, 669 

 , degree of, 670 



— edema, 695 



— edge, growth from , 671 



— healing, 664 



, contraction phase, 693 



, favorable embryo juice action on 



, 677 



, mammalian, 666 



, productive phase, 697 



, role of sulfur, 699 



, stimulus, 666 



, substrate phase, 697 



, syneresis of plasma clot, 692 



, tensile strength as index of — — , 



697 



— hormone, 666 

 in plants, 768 



— , sphincter type action of — perimeter, 670 

 — , remodelling, 682 



— tensile strength, decreased by iodoacetic 

 acid, 701 



wounding stimulating cell division in 



plants, 771 

 wounds, influence of gravity, 677 



Xanthium pennsylvanicum, 766 

 xanthine oxidase, 26 

 — , oxidation, 2 1 

 xanthosinic acid, 10, 36 

 xanthylic acid, 95 

 Xenopus, 231, 342, 459, 617 



— embryo, 504 



— oocytes, 310 

 xeno-inductions, 427 

 — , bacterial, 439 



— , biochemical nature of agents 



causing — , 447 

 xeno-inductors, 358 

 — , fractionation, 433 



Xiphophorus, 244 

 XMP, 95 



— transfer reactions, 35 

 X-irradiation, depolymerization of DNA 



by — 272 



— as mitotic inhibitor, 272 

 XMP (xanthylic acid), 95 

 X-ray induced ovarian and 



adrenocortical tumorigenesis, 848 

 X-rays, thymoma-inciting action, 861 

 XRPP, 103 

 xylitol, 10 



xylose isomerase, synthesis, 294 

 xylulose, muscle aldolase catalizing — 



phosphate synthesis, 49 

 xylulose-5-P, 5 



Y-acyl-CoA-dehydrogenase, i 7 

 yeast, 61 7 



— filamentous mycelium, 536 



— mutant, divisionless, 536 



— mutants requiring purines for growth, 509 



— nucleic acids, 95 

 "Yj" enzyme, 6 

 "Yj" enzyme, 6 

 yolk degradation, 499 



— , breakdown of the — platelets in chor- 

 domesoblast during invagination, 361 



— nucleus, 314 



— , participation of — in morphochoresis,476 



— platelets, 310, 322 



— proteins degradation to amino acids, 531 

 — , relation of phosphatase activity to — 



platelet utilization, 499 

 — , relationship of nitrogen metabolism 



with — storage, 729 

 — , small — plug stage, 390 



— synthesis as anabolic process of 

 nitrogen metabolism, 715 



— wall, inner, 322 



Yoshida ascites tumor, of the rat, 565 

 , free amino acids pattern, 896 



— sarcoma, 881 



, glutamine metabolism, 901 



young orthoclone, 954 



Zea mats, 750 



zinc content of methylcholanthrene 



induced carcinoma, 915 

 zinc salts as cause of expansion of the 



ectoblast cytoplasm, 422 

 zona striata in the chorion, 314 

 Zymobacterium oroticum, 99 

 zymosterol, 1 10 



