Some algae are potentially adequate sources of vitamin B-12 for vegans.
Dagnelie
P C
PC
D002648:Child; D014676:Diet, Vegetarian; D004909:Erythrocyte Indices; D006801:Humans; D012624:Seaweed; D014805:Vitamin B 12 / Q000097:blood*; D014806:Vitamin B 12 Deficiency / Q000097:blood*
D014805:Vitamin B 12