title: Carbon monoxide control in a high highway tunnel.
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D002248:Carbon Monoxide / Q000097:blood*; D003120:Colorado; D005260:Female; D006801:Humans; D000860:Hypoxia / Q000209:etiology* / Q000503:physiopathology; D011247:Pregnancy; D001335:Vehicle Emissions / Q000009:adverse effects*
chemical_list: D001335:Vehicle Emissions; D002248:Carbon Monoxide