title: To be responsive or not to be responsive, that is the mucosal question.
authors.forename: W
authors.initials: W
authors.lastname: Strober
authors.forename: B
authors.initials: B
authors.lastname: Kelsall
mesh_terms: D006801:Humans; D007111:Immunity, Cellular; D018928:Immunity, Mucosal; D013601:T-Lymphocytes / Q000276:immunology*