TLR9 and enteritis: The administration of butyrate had no effect (P ≥ 0.16) on expression of Th1 (Ifnγ, Tnfα)-, Th2 (Il4)-, and Th17 (Il17A, Il22)-associated cytokines or on expression of Myd88, Prg3, RegIIIγ, Tff3, and Tlr9 in mice without enteritis relative to mice that were not administered butyrate (data not presented).