title: VITAMIN B12 in oral therapy. Role of Castle's intrinsic factor.
mesh_terms: D045728:Corrinoids; D006397:Hematinics; D006801:Humans; D007437:Intrinsic Factor; D014805:Vitamin B 12
chemical_list: D045728:Corrinoids; D006397:Hematinics; D007437:Intrinsic Factor; D014805:Vitamin B 12