title: Smoking and immunity.
mesh_terms: D000818:Animals; D006801:Humans; D007109:Immunity / Q000187:drug effects*; D008175:Lung Neoplasms / Q000209:etiology / Q000401:mortality; D051379:Mice; D012907:Smoking; D013638:Tars / Q000009:adverse effects*
chemical_list: D013638:Tars