SUBJECT INDEX 



675 



sources of, 26-28 



standardization of, 99-100 



stereoisomers of, 43-46, 75-82, 86 



structure of, 3 



synthesis, 33-41 



transport of, 83 

 a//o-Vitamin A, 55 

 All-//ans-vitamin A, 



biological activity of, 86 

 2,3,4-Tri-//a«s-5-f/s-Vitamin A, see 



Neovitamin A 

 Vitamin Ao , 26 



identification of, 64-66 



isolation and properties, 28, 50-51 



occurrence and activity, 104 



structure of, 51-54, 66 



synthesis of, 54 



in vision, 61 



vitamin activity of, 65 

 Vitamin A acetate, 



properties of, 100 

 Vitamin A acid, 47 



synthesis of, 34-35 

 Vitamin A aldehyde, 25, 26, 32, 62 see 

 also Retinene 



preparation of, 46 



stereoisomers of, 46 



sj'nthesis of, 35 

 3-cts-Vitamin A aldehyde, 45 



biological potenc\- of, 47 

 Vitamin A esters, 



occurrence of, 104 

 Vitamin A ethers, 39 

 Vitamin Be , 508, see also Pyridoxine 

 Vitamin B12 , 366, 369, 371 



absorption spectrum of, 448-449 



activity of different forms, 446 



ascorbic acid and, 331 



basic groups of, 401 



binding of, 493-496 



biochemistry of, 421-443 



biogenesis of, 446-448 



chemistry of, 397-416 



cobalt complex of, 407-414 



in cobalt of deficiency, 521 



constitution of, 402-414 



deficiency, 

 dietary, 492 

 effects, 444, 481-489 

 in humans, 491-505 



mechanism of |)roduction, 491-492 



pathology of, 489-505 

 distribution of, 448, 476-480, 515-516 

 effect on growth, 503 



in vitro, 496 



on pantothenic acid storage, 512-513 



of reducing agents on, 482 



of route of administration, 511-512 

 estimation of, 



biological, 452-455 



chemical, 449-452 



microbiological, 455-472 



physical, 448-449 

 extraction procedures, 470-472 

 forms of, 408-409 

 in human metabolism, 445-446 

 industrial preparation of, 417-421 

 isolation of, 397-399, 418-420 

 liver function and, 423-425 

 microbiologically active forms of, 485- 



487 

 in neurologic disorders, 503-504 

 nitrogen metabolism and, 421-422 

 nomenclature, 396 

 in pernicious anemia, 492-505 

 pharmacologj' of, 506 

 production by fermentation, 419 

 production and price, 420-421 

 properties of, 400-402, 472-173 

 puritj' of, 421 

 radioactive, 416-417, 495 

 relation to folic acid, 430-432, 491, 497 

 requirements, 



of chickens, 507-513 



of humans, 522-523 



of rats, 513-517 



of ruminants, 521-522 



of swine, 517-520 

 separation of different forms, 486-487 

 sources of, 417-418 

 specificity of, 443-446 

 standardization of, 472-476 

 synthesis of, 414-417 

 in tapeworm infestation, 501-502 

 tumors and, 443 

 Vitamin C, see Ascorbic acid 

 Vitamin D, 124, 125, 131, 132, 161 

 relation to ascorbic acid, 327 

 Vitamin E, 424 

 relation to ascorbic acid, 328 

 solubilization of, 84 



