476
TOPICAL SUBJECT INDEX
natural,
ammonia in, V, 161-162
nitrogen in, V, 134-136
translocation of, II, 462-464
urine and, II, 479, 481, 487, 494, 496498
Waxes,
fatty acids of, III, 6, 7, 52-55, 90-91
nature of, III, 11
Willardine, occurrence of, V, 67
Wood, digestion of, VI, 387
Work, forms of, I, 23-24
Worms, pentose phosphate cycle in, VII,
62-64
X
Xanthophylls, structures of, IV, 647-653
Xenopus hevis,
metamorphosis, serum proteins and,
IV, 517-518
X-protein, nature of, II, 299
Xylanase, occurrence of, III, 402-403
Xylose,
occurrence,
combined, III, 323
free, III, 322-323
Y
Yeast,
amylases of, III, 375
citrulline in, II, 198
fats of, III, 42
organic acid metabolism in, V, 279281
sterol synthesis in, III, 169-170
Yolk,
formation gonadotropic hormone and,
VI, 282
Y-protein, characteristics of, II, 298-299
Ζ
Zeta potential, membranes and, VII, 154
Zinc, requirement for, VI, 178-179
Zymosterol, properties of, III, 118-119