title: IL-22 from T cells: better late than never.
abstract: Interleukin-22 (IL-22) enhances mucosal barrier function and is important in antimicrobial host defense. In this issue of Immunity, Basu et al. (2012) reveal that Th22 cells are the critical adaptive source of IL-22 during late-phase infection by Citrobacter rodentium.
authors.affiliation: Department of Immunology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. kenya@m.u-tokyo.ac.jp
authors.forename: Kenya
authors.initials: K
authors.lastname: Honda