title: IL-9 by INFERence.
abstract: Despite the discovery of the cytokine over 20 years ago, the relevant biological sources of interleukin-9 (IL-9) have remained a mystery. In this issue of Immunity, Licona-Limón et al. (2013) use a newly generated reporter mouse to demonstrate a role for IL-9-secreting T cells in helminthic parasite immunity.
authors.affiliation: Department of Pediatrics and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
authors.forename: Baohua
authors.initials: B
authors.lastname: Zhou
authors.forename: Mark H
authors.initials: MH
authors.lastname: Kaplan
mesh_terms: D000818:Animals; D007111:Immunity, Cellular; D016906:Interleukin-9 / Q000276:immunology*; D007422:Intestines / Q000276:immunology*; D037181:Lectins, C-Type / Q000276:immunology*; D008297:Male; D009559:Nippostrongylus / Q000276:immunology*; D017206:Strongylida Infections / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*
chemical_list: D016906:Interleukin-9; D037181:Lectins, C-Type; C464940:MGL2 protein, mouse