SUBJECT INDEX 



GG7 



Lcprotin, 



occurrence of, 101 

 Leucoanthocyanins, 231 

 Leucocytes, 



ascorbic acid in, 384 



in scurvy, 291-292 

 Leucopenia, 



in vitamin B12 deficiency, 491 

 Leukemia, 357, 375 

 Light, 



effect on ascorbic acid synthesis, 220- 

 221 

 Linoleic acid, 319 



effect on biotin assay, 594 

 Lipocaic, 



in biotin fatty liver, 606 

 Liver, 



in biotin deficiency, 606-608 



in scurvy, 295 

 Liver esterase, 



ascorbic acid and, 238 

 Lumi-rhodopsin, 62 

 Luteochrome, 18 

 Lycopene, 9, 10, 11, 52, 94, 95 

 Lysine, 



in avidin, 557 



in biocj^tin, 554 



deficiency, 444 

 Lysolecithin, 



effect on biotin ultilization, 571 

 Lysozyme, 



vitamin B12 binding by, 494, 495 

 L-Lyxose, 209 

 L-Lyxosone, 



in ascorbic acid synthesis, 189, 209 



M 



Malaria, 611 

 Maleic anhydride, 



reaction with neovitamin A, 44 



reaction with vitamin A, 31, 92 

 Malic acid, 235, 582-583 



biotin and, 578 



in aspartic acid sj'nthesis, 583 



in dehydroascorbic acid reduction, 236 



vitamin B12 and, 484-485 

 Malic dehj'drogenase, 



in dehydroascorbic acid reduction, 230 

 "Malic" enzyme, 



biotin and, 578-579 



Mandelic acid, 



in separation of biotin isomers, 547 

 Manganese, 514 



relation to ascorbic acid, 219, 323-324 

 Mannosaccharodilactone, 192 

 Mannose, 215 



in ascorbic acid synthesis, 213-214 

 Melanin, 145-146 



in avitaminosis A, 157 

 Membrane permeability, 



in scurvy, 341 

 Mercury, 



effect on urease, 239 

 Mesenchymal tissue, 



in scurvy, 272-283, 371 

 Metaphosphoric acid, 245, 246 

 Meta-rhodopsin, 62 

 Methanol, 425 



Methemoglobinemia, 378-379 

 Methionine, 315, 387, 422, 423, 497, 517, 

 518 



deamination of, 583 



formate and, 429-430 



vitamin B12 and, 432-443, 466, 467, 469, 

 484-485 

 Methylaminoethanol, 



in choline sj'nthesis, 436 

 2-Methyl ascorbic acid, 208 

 3-Methyl-L-ascorbic acid, 205, 206, 208 

 5-Methj'lbenzimidazole, 



biological activitj' of, 414 

 Methylene blue, 236, 248 



reduction of, 229-230 

 Methyl glyoxal, 214 

 3-Methylheptadiens, 52 

 1 -Methyl heteroascorbic acid, 206, 208 

 Methyl-2-keto-L-gulonate, 



antiscorbutic activity of, 198 

 3-Methyl-l -phenyl -5-pyrazolone, 



in vitamin B12 assay, 450 

 Bi8(3-Methyl-l-phenyl-5-p3'razolone), 



in vitamin B12 assaj-, 450 

 Methyl vinj'l ketone, 42 

 Mice, 



vitamin A requirements of, 164-166 

 Microorganisms, 



intestinal, see Intestinal Microor-' 

 ganisms 



vitamin B,2 and, 398, 399, 481-489 

 Minks, 



vitamin A requirements of, 166 



