title: Overview of the mucosal immune system.
authors.forename: P
authors.initials: P
authors.lastname: Brandtzaeg
mesh_terms: D000818:Animals; D004848:Epithelium / Q000276:immunology; D006801:Humans; D007107:Immune System / Q000502:physiology*; D007108:Immune Tolerance; D007070:Immunoglobulin A / Q000096:biosynthesis; D008214:Lymphocytes / Q000276:immunology; D009092:Mucous Membrane / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A