662 



SUBJECT INDEX 



Dilantin, 357, 375 

 6,7-Dimethylalloxazine, 



in vitamin B12 assay, 449-450 

 1 , 1-N-Dimethylaminoazobenzene, 



in tumor formation, 610 

 p-Dimethylaminobenzaldehyde, 402 

 Dimethylaminoethanol, 435, 438 

 2,3-Dimethylascorbic acid, 187, 208 

 2,5-Dimethylbenzimidazole, 

 biological activity of, 414 

 5,6-Dimethylbenzimidazole, 486 

 biological activity of, 414 

 toxicity of, 489 

 in vitamin B12 , 402-404 

 in assay of, 449, 450 

 l,2-Dimethyl-4,5-diaminobenzene, 

 biological activity of, 414, 487, 489 

 effect on vitamin B12 production, 447 

 toxicity of, 489 

 4,5-Dimethyldibenzoyl-o-phenylene- 

 diamine, 

 in vitamin B12 assay, 449 

 2,3-Dimethyl-D-glucoascorbic acid, 208 

 1,2-Dimethyl heteroascorbic acid, 208 

 2,6-Dimethylnaphthalene, 11, 32 

 2,7-Dimethyloctatriendial, 25 

 4,5-Dimethyl-o-phenylenediamine, 



in vitamin B12 assay, 449 

 Dimethyl-L-threonamide, 187 

 2,4-Dinitrophenylhydrazine, 

 in ascorbic acid assay, 205 

 in dehydroascorbic acid estimation, 

 251-252 

 Diphosphopyridine nucleotide, 142, 231, 

 232 

 in dehydroascorbic acid reduction, 230 

 in glutathione reduction, 234-235 

 in rhodopsin synthesis, 74 

 in vitamin A formation, 66-71 

 Diphyllohothrium latum, 



in vitamin B12 deficiency, 501-502 

 Diplococci , 340 

 Disease, 



effect on vitamin A absorption, 174 

 DNA, see Desoxyribonucleic acid 

 Dodecapreno-/3-carotene, 24 

 Dogs, 



vitamin A requirements of, 166 

 Dopa, see Dihydroxyphenylalanine 



Ebers Papyrus, 348 

 Eberthella typhi, 340 

 Echinenon, 11 



occurrence of, 101 

 Egg production, 



vitamin B12 and, 444 

 Eggs, 



biotin in, 599 

 Egg white, 



effect in diet, 527-528 

 Egg white injury, 600 

 Elaidic acid, 



in biotin replacement, 565 

 Endocrine glands, 



in hypervitaminosis A, 134 

 in scurvy, 301 



in vitamin A deficiency, 116 

 Enzymes, proteolytic, 



in scurvy, 333 

 Epiallobiotin, 574 

 Epibiotin, 546, 574 

 Epinephrine, 289 

 Epioxybiotin, 



biological activity of, 559 

 Epiphysis, 



in vitamin A deficiency, 116-117 

 Epithelial tissues, 

 in hypervitaminosis A, 133-135 

 in vitamin A deficiency, 140-141 

 metaplasia of, 147-149 

 Erythrocytes, 



in scurvy, 290-291 

 Erythrotin, see Vitamin B12 

 Escherichia coli, 340, 341, 485, 493 

 in vitamin B12 assay, 460, 461, 465-466, 

 467, 468-470 

 Ethanol dehydrogenase, see Alcohol 



dehydrogenase 

 Ethoxyacetylene , 



in vitamin A synthesis, 33-35 

 Ethyl benzoyl oxyacetate, 197 

 Ethyl-7-bromocrotonate, 34 

 Ethylene chlorohydrin, 232 

 Ethylenediaminetetraacetic acid, 



in vitamin B12 assay, 463 

 Ethyl glyoxylate, 197 

 Ethyl hydroxyethoxyacetate, 197 

 Ethyl-/3-ionylidenecrotonate, 34 

 Ethyl mesoxalate, 197 



