The number of CD45RA−CD62L+CCR7+ cells significantly reduced in mice with colitis in the DSS group compared with the normal group (Figures 4C1–5), but the numbers of two main subsets of TCM cells, CD4+ TCM (Figures 4D1–5) and CD8+ TCM (Figures 4E1–5), were significantly higher in the DSS group than in the normal group. Here, CCR7 is linked to colitis.