hematinic principle

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he·ma·tin·ic prin·ci·ple

the principle previously thought to be produced by the action of Castle intrinsic factor on an extrinsic factor in food, now recognized as vitamin B12.
Farlex Partner Medical Dictionary © Farlex 2012

vi·ta·min B12

Generic descriptor for compounds exhibiting biologic activity of cyanocobalamin.
Medical Dictionary for the Dental Professions © Farlex 2012