title: Controlled studies of human exposure to single and combined action of NO2, O3, and SO2.
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects; D006801:Humans; D008168:Lung / Q000187:drug effects / Q000502:physiology*; D009609:Nitrous Oxide / Q000494:pharmacology*; D010126:Ozone / Q000494:pharmacology*; D012129:Respiratory Function Tests; D013458:Sulfur Dioxide / Q000494:pharmacology*
chemical_list: D000393:Air Pollutants; D013458:Sulfur Dioxide; D010126:Ozone; D009609:Nitrous Oxide