title: The lungs at the frontlines of immunity.
mesh_terms: D056704:Adaptive Immunity; D001402:B-Lymphocytes / Q000276:immunology; D006801:Humans; D007113:Immunity, Innate; D008168:Lung / Q000166:cytology / Q000276:immunology*; D008171:Lung Diseases / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology