title: Letter: T-cells in Crohn's disease.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes; D003424:Crohn Disease / Q000097:blood* / Q000276:immunology; D006801:Humans; D007111:Immunity, Cellular; D007958:Leukocyte Count; D012756:Sheep / Q000276:immunology; D013601:T-Lymphocytes