Cigarette nicotine content as a determinant of human smoking behavior.
D000328:Adult; D006801:Humans; D009042:Motivation; D009538:Nicotine / Q000032:analysis*; D008517:Phytotherapy; D010947:Plants, Toxic; D011603:Psychophysiology; D012907:Smoking; D014026:Nicotiana / Q000032:analysis*; D014675:Vegetables
D009538:Nicotine