Figure 5. Western blot for AQP5 in keratoconus and non-keratoconus epithelial cells. The photograph of a western blot identifies two bands of AQP5. Twenty-seven and 31 kDa corresponds to the non-glycosylated protein and glycosylated form of the AQP5 protein, respectively. Lane A corresponds to a non-KC sample; lane B corresponds to a KC sample. GAPDH protein is shown below as an internal control.