The treadmill of lead.
D002648:Child; D002657:Child Development / Q000187:drug effects; D004781:Environmental Exposure; D006801:Humans; D006948:Hyperkinesis / Q000097:blood / Q000139:chemically induced; D007854:Lead / Q000097:blood; D007855:Lead Poisoning / Q000097:blood / Q000523:psychology*
D007854:Lead