CCL2 and Hepatic fibrosis: As shown in Figures 3C,D, as the degree of liver fibrosis worsened, the expression of CCL2 gradually increased as compared to the control group (N group) (F1 vs. N, P = 0.013, F2 vs. N, P < 0.01, F3 vs. N, P < 0.001, F4 vs. N, P < 0.001).