Vitamin B12 and the intrinsic factor.
D045728:Corrinoids; D006397:Hematinics; D006801:Humans; D007437:Intrinsic Factor; D014805:Vitamin B 12
D045728:Corrinoids; D006397:Hematinics; D007437:Intrinsic Factor; D014805:Vitamin B 12
VITAMIN B12