title: Cigarette smoking and plasma levels of nicotine.
mesh_terms: D002849:Chromatography, Gas / Q000295:instrumentation; D006801:Humans; D008297:Male; D009538:Nicotine / Q000097:blood*; D012906:Smoke / Q000032:analysis; D012907:Smoking
chemical_list: D012906:Smoke; D009538:Nicotine