title: Pharyngeal lymphoid tissue: gatekeeper or showstopper?
authors.forename: D P
authors.initials: DP
authors.lastname: Lunn
mesh_terms: D000818:Animals; D006736:Horses / Q000276:immunology*; D018928:Immunity, Mucosal; D008221:Lymphoid Tissue / Q000502:physiology*; D014066:Palatine Tonsil / Q000276:immunology / Q000502:physiology*; D020545:Respiratory Mucosa / Q000502:physiology