IL17A and colitis: Furthermore, MLB cells derived from TNBS-induced colitis rats significantly increased the proportions of CD4+ interferon-γ+ (IFN-γ+) T (Th1) cells (Figure 6C) and CD4+interleukin-17+ (IL-17+) T (Th17) cells (Figure 6D) in the colonic lamina propria, while simultaneously reducing the proportion of CD4+IL-4+ T (Th2) cells, compared to the control group (Figure 6E).