Fig. 5

The effects of cyclic stretching and IL-1β on MMP9 activity in corneal fibroblasts. MMP9 was detected by western blot (a) and quantified by densitometry (b–d). The indicated quantitative data are the mean of three different experiments (n = 6). ND, not detected; *p < 0.05, ratio compared to  0.2 ng/mL IL-1β; ^#p < 0.05, compared with the static control at the same IL-1β treatment