The serum vitamin B12 levels at various ages.
D045728:Corrinoids; D017127:Glycation End Products, Advanced; D006397:Hematinics; D006801:Humans; D014805:Vitamin B 12 / Q000097:blood*
D045728:Corrinoids; D017127:Glycation End Products, Advanced; D006397:Hematinics; D014805:Vitamin B 12
VITAMIN B12/in blood