SUBJECT INDEX 



665 



Vitamin Bio , 596 

 Vitamin li,, , fjOC. 

 Vitamin i.; , Kit), 410, 51):?, 5l»7 



l)i(isyntlu\sis <»f, ■V2'2 



lidicicMicy, ISS-lSO 



t'lTt'rt on purine rc(}uiremcnt, 131 



glycine toxicity and, \'.\H 



in amino acid synthesis, 136 



in anemia, 203, 205, 206, 207, 200,211- 

 213 



in choline synthesis, 137-138 



in methionine synthesis, 140-142 



in pteroylglutamic acid deficiency, 186, 

 187, 188 



pteroylglutamic acid and, 194-195 



reproduction and, 175 



synthesis of, 18-19 



tyrosine and, 192 

 Vitamin Bn , 576-577 

 Vitamin Bu , 596 

 "Vitamine", 405 

 Vitamin E, see also Tocopherols 

 Vitamin F, see Thiamine 

 Vitamin G, see Riboflavin 

 Vitamin H, see p-Aminobenzoic acid 

 Vitamin H, see Vitamin Be 

 Vitamin K, 491, 506 



sulfonamides and, 172 

 Vitamin L, 596 

 Vitamin Li , 596 

 Vitamin M, 180, see also Pteroylglutamic 



acid 

 Vitamin P, 550 

 Vitamin T, 596 



Vitamins B, in antioxygenic action, 503- 

 504 



W 



"White-muscle" disease, 524, 525 

 Work, effect on thiamine requirement, 

 477 



Xanthine, 22, 25, 125 



in sulfonamide reversal, ti9 



oxidation of, 347, 348 

 Xantliine oxidase, 350, 351 



preparation, 347-348 



properties, 348 



riboflavin analogs and, 328-329 

 Xanthine oxidase factor, 596 

 Xanthophyll, tocopherol and, 505, 536 

 Xanthopterin, 



hematopoietic eiTect of, 145-147 



in pteroylglutamic acid estimation, 162 



in pteroylglutamic acid deficiency, 187 



isolation and sources of, 145 



relation to pteroylglutamic acid, 145- 

 149 



reproduction and, 175 

 Xanthopterin oxidase, inhibition of, 349 

 Xanthurenic acid, 282, 285 



vitamin Be and, 268, 270, 271, 272, 274, 

 286-288, 293 

 o-Xylene, in riboflavin synthesis, 314 

 3,4-Xylidine, in riboflavin sj'nthesis, 



316-317 

 Xyloflavin, eff'ect on growth, 327 



Yeast, 



concentrates of, 410, 411 



in thiamine estimation, 450-451 

 Yeast eluate factor, see Vitamin Be 

 Yellow enzj'me, 



in flavin nucleotide estimation, 369 



resolution of, 337 



synthetic, 342 

 "Yellow-fat" disease, 539 



Zwischenferment, 341, 342 



