title: Recovery of immune system after cigarette smoking.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology*; D004912:Erythrocytes / Q000276:immunology; D006462:Hemolytic Plaque Technique; D007111:Immunity, Cellular; D007114:Immunization; D008168:Lung / Q000276:immunology; D008198:Lymph Nodes / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D008264:Macrophages / Q000276:immunology; D051379:Mice; D012756:Sheep / Q000276:immunology; D012907:Smoking; D013154:Spleen / Q000276:immunology; D013997:Time Factors