title: The luxus vitamins--A and B12: reply to McLaren.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007700:Kinetics; D008875:Middle Aged; D014018:Tissue Distribution; D014805:Vitamin B 12 / Q000378:metabolism*
chemical_list: D014805:Vitamin B 12