title: Some effects of changing to low-tar and low-nicotine cigarettes.
mesh_terms: D000328:Adult; D002248:Carbon Monoxide / Q000097:blood; D002263:Carboxyhemoglobin / Q000032:analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000032:analysis; D012907:Smoking; D013638:Tars / Q000032:analysis
chemical_list: D013638:Tars; D009538:Nicotine; D002248:Carbon Monoxide; D002263:Carboxyhemoglobin