title: How does smoking harm the heart?
mesh_terms: D002263:Carboxyhemoglobin / Q000032:analysis; D003327:Coronary Disease / Q000209:etiology*; D006801:Humans; D010947:Plants, Toxic; D012306:Risk; D012906:Smoke / Q000032:analysis; D012907:Smoking / Q000502:physiology*; D014026:Nicotiana
chemical_list: D012906:Smoke; D002263:Carboxyhemoglobin