title: Nicotine content in smoke from US cigarettes has increased.
authors.forename: Janice Hopkins
authors.initials: JH
authors.lastname: Tanne
mesh_terms: D006801:Humans; D009538:Nicotine / Q000032:analysis*; D012906:Smoke / Q000032:analysis*; D012907:Smoking; D014481:United States
chemical_list: D012906:Smoke; D009538:Nicotine