Fig. 3
From: Cyclic stretch induced-retinal pigment epithelial cell apoptosis and cytokine changes
Stretch-induced apoptosis of RPE cells. Annexin V-PI double staining was used to detect the apoptosis of RPE cells at different time points. The apoptosis ratio was significantly increased at 14 h (p < 0.01) and reached its highest, 36.47%, at 24 h. In the stretch-withdrawn group, the apoptosis ratio significantly reduced at R6h compared to 14 h (p < 0.01). At R6h, the apoptosis ratio decreased to as low as 3.88%