Comparative microbiological studies with vitamins B12 and B12a.
D045728:Corrinoids; D006801:Humans; D014805:Vitamin B 12; D014803:Vitamin B Complex; D014815:Vitamins
D045728:Corrinoids; D014815:Vitamins; D014803:Vitamin B Complex; D014805:Vitamin B 12
VITAMIN B12