Fig. 3. The senescent state was dynamically monitored in WI-38 fibroblasts. (A) The senescent state at PD < 25 of WI-38. (B) The senescent state at PD 25 of WI-38. (C) The senescent state at PD 35 of WI-38. (D) The senescent state at PD 45 of WI-38. The proliferation with EdU staining at PD 25 (E), 35 (F), 45 (G) of WI-38 fibroblasts. Data are presented as means ± SD (n = 3). *P < 0.05 compared with the control group.