[On vitamin B-12].
D045728:Corrinoids; D006397:Hematinics; D006801:Humans; D014805:Vitamin B 12; D014803:Vitamin B Complex; D014815:Vitamins
D045728:Corrinoids; D006397:Hematinics; D014815:Vitamins; D014803:Vitamin B Complex; D014805:Vitamin B 12
VITAMIN B 12