Figure 3. Diquafosol tetrasodium induces p-ERK in hyperosmotic stressed HCECs. Representative photograph of p-ERK and ERK protein levels and relative expression results for both markers. All relative signal intensities were normalized against β-actin. Expression levels of p-ERK and ERK were obtained from the same gel in western blot. * p<0.05, ** p<0.01 versus control.