Smoking; reducing the dangers.
D000818:Animals; D001681:Biological Assay; D002248:Carbon Monoxide / Q000032:analysis; D002273:Carcinogens; D003327:Coronary Disease / Q000209:etiology; D006801:Humans; D051379:Mice; D009538:Nicotine / Q000032:analysis; D010947:Plants, Toxic; D012867:Skin; D012907:Smoking / Q000150:complications*; D013638:Tars / Q000032:analysis; D014026:Nicotiana / Q000032:analysis*
D002273:Carcinogens; D013638:Tars; D009538:Nicotine; D002248:Carbon Monoxide