CD4 and colitis: As shown in Figure 4, the percentages of CD4+ mTfh cells in untreated mice with colitis were reduced when they were compared to those in the Nor group, DSS + SSP group, and DSS + 5-ASA group (Figures 4(a)–4(c), and 4(f); P < 0.01 or P < 0.05).