SUBJECT INDEX 



765 



properties of, 489-490 



structure, 488-489 

 Tromexan, 427-428 

 Trout, choline deficiencj^ in, 103 

 Trypsin, fatty liver and, 101 

 Trypsin inhibitor, 101 

 Trj'ptophan, deficiency in rats, 568 



effect in choline deficiency, 79 



gelatin and, 94 



in niacin assaj', 539-540 



in pellagra, 553 



isomers, in niacin synthesis, 531-532 



niacin and, 505, 521, 523-529, 580-581 



pantothenic acid and, 680 

 Tuberculosis, 261, 264 

 Tumors, choline and, 89-90 

 Turkey, pantothenic acid deficiency in, 



661 

 Turkej' poults, choline deficiency in, 97 

 Tween SO, effect on phospholipids, 373 

 Tyramine, effect on choline oxidase, 36 



U 



Ultraviolet raj-s, vitamin D and, 133 

 Urea, from choline, 93 

 Urethane, choline oxidase and, 39 

 Urorosein, niacin and, 556-557 



Vanillin, in vitamin D estimation, 217 

 Vigantol, 264 

 Vinyltrimethylammonium hydroxide, see 



Neurine 

 Vitamin A, 210, 212, 246 



choline and, 90, 91 



destruction of, 133 



fatty acids and, 315 



in fish liver oils, 167 



in vitamin D estimation, 216 



niacin and, 563 



vitamin K and, 418, 426 

 Vitamin (s) B, 246 



inositol and, 384 

 Vitamin B2 , 591 

 Vitamin Bu> , 79, 517, 673 



choline oxidase and, 37, 39 



effect on pantothenic acid require- 

 ment, 684-685, 694 



effect on sulfhydryl groups, 85-86 



in canine nutrition, 97-98 



in chick nutrition, 95-96 



in leucopenia, 90-91 



in methyl group synthesis, 23 



perosis and, 97 



relation to choline, 49, 83, 128 



transmethj'lation and, 84 

 Vitamin C, 246 



effect on osteoblasts, 237 



osteoid and, 236 

 Vitamin (s) D, 



absorption in disease, 259 



chemistry, 132-209 



effect on calcium absorption, 249-252 



effect on phosphorus absorption, 249- 

 252 



effects of deficiency, 223-248 

 in animals, 223-232 

 in humans, 232-248 



estimation of, 215 



biological methods, 218-221 

 chemical methods, 216-218 

 physical methods, 215 



form of administration, 259 



formation in animals, 161, 170-172 



industrial preparation, 210-215 



isolation of, 172-173 



minor and obscure forms, 203-209 



nomenclature, 132 



occurrence, 160-172 



pathology in humans, 232-248 



requirements, 

 factors affecting, 257 

 of animals, 253-256 

 of humans, 257-266 



standardization of activitj', 221-223 



unit, 221 

 Vitamin Di , composition of, 196 

 Vitamin D2 , 132 

 Vitamin D3, 132, see also Calciferols 



as standard, 222 



properties of, 202-203 

 Vitamin D4 , 



production of, 205 

 Vitamin D5 , 203 

 Vitamin E, 89, see also a-Tocopherol 



choline oxidase and, 39 



deficiency, 75 



inositol and, 369-370 



in vitamin K assay, 405 

 Vitamin F, see Essential fatty acids 

 Vitamin G, 591 

 Vitamin (s) K, 



