Figure 4. The effect of PPARα on cell proliferation during corneal epithelium repair. Immunofluorescence staining of Ki67 (A), positive cell counting (B), and mRNA expression (C) shows a more rapid cellular proliferation in WT mice compared to PPARα^−/− mice during corneal epithelial repair. Data are shown as mean ± SD n=6–8, **p<0.01, ***p<0.001. Scale bars: 50 μm. UN, Uninjured.