title: Lead in the environment.
mesh_terms: D000042:Absorption; D000397:Air Pollution; D004777:Environment; D004781:Environmental Exposure; D004782:Environmental Health; D006801:Humans; D007854:Lead / Q000097:blood / Q000652:urine; D007855:Lead Poisoning; D008452:Maximum Allowable Concentration; D001335:Vehicle Emissions
chemical_list: D001335:Vehicle Emissions; D007854:Lead