"Safe" blood lead levels may damage kids' brains.
D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007360:Intelligence / Q000187:drug effects*; D007361:Intelligence Tests; D007854:Lead / Q000097:blood*; D007855:Lead Poisoning / Q000150:complications*; D012016:Reference Values
D007854:Lead