title: Composition of tobaccos from countries with high and low incidences of lung cancer. I. Selenium, polonium-210, Alternaria, tar, and nicotine.
abstract: Tobaccos from countries with high and low incidences of lung cancer were analyzed. Tobacco concentrations of polonium-210 were similar in cigarettes from high- and low-incidence countries, as were levels of cigarette smoke tar and nicotine. Tobaccos from low-incidence countries had significantly lower Alternaria spore counts. Mean selenium concentrations of tobaccos from the high-incidence countries (0.16 +/- 0.05 micrograms/g) were significantly lower than those of tobaccos from the low-incidence countries (0.49 +/- 0.22 micrograms/g).
mesh_terms: D000528:Alternaria; D003105:Colombia; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D008800:Mexico; D003904:Mitosporic Fungi; D009538:Nicotine / Q000032:analysis*; D010947:Plants, Toxic; D011059:Polonium / Q000032:analysis*; D012643:Selenium / Q000032:analysis*; D012906:Smoke / Q000032:analysis; D013548:Sweden; D013638:Tars / Q000032:analysis*; D014026:Nicotiana / Q000032:analysis*; D006113:United Kingdom; D014481:United States
chemical_list: D012906:Smoke; D013638:Tars; D009538:Nicotine; D011059:Polonium; D012643:Selenium