title: Lead and tetrahydrobiopterin metabolism: possible effects on IQ.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001708:Biopterins / Q000031:analogs & derivatives / Q000097:blood*; D002648:Child; D002675:Child, Preschool; D003071:Cognition / Q000502:physiology; D005260:Female; D006801:Humans; D007223:Infant; D007360:Intelligence; D007854:Lead / Q000097:blood*; D008297:Male; D008875:Middle Aged; D011621:Pteridines / Q000097:blood*
chemical_list: D011621:Pteridines; D001708:Biopterins; D007854:Lead; C003402:sapropterin