title: Low-tar cigarettes can produce long-term reduction in nicotine exposure.
mesh_terms: D000293:Adolescent; D000328:Adult; D002263:Carboxyhemoglobin / Q000097:blood; D005260:Female; D006801:Humans; D008297:Male; D009055:Mouth / Q000187:drug effects; D009538:Nicotine / Q000032:analysis; D010947:Plants, Toxic; D011247:Pregnancy; D012907:Smoking; D013638:Tars / Q000032:analysis; D014026:Nicotiana / Q000032:analysis; D014427:Twins
chemical_list: D013638:Tars; D009538:Nicotine; D002263:Carboxyhemoglobin