title: Letter: Cigarette smoke as a carcinogen?
mesh_terms: D000368:Aged; D000818:Animals; D001580:Benzopyrenes; D002273:Carcinogens; D006224:Cricetinae; D004781:Environmental Exposure; D004785:Environmental Pollutants; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000235:genetics; D009374:Neoplasms, Experimental / Q000139:chemically induced; D012306:Risk; D012878:Skin Neoplasms / Q000139:chemically induced; D012906:Smoke; D012907:Smoking; D013223:Statistics as Topic
chemical_list: D001580:Benzopyrenes; D002273:Carcinogens; D004785:Environmental Pollutants; D012906:Smoke