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Effect of the PPARβ/δ agonist on the normal cornea at 7 days. HE staining of the vehicle group (a: central region, b: peripheral region) and PPARβ/δ group (d: central region, e: peripheral region). Bar, 50 μm. No obvious difference in the HE staining images or macroscopic images (c, f) was apparent between the two groups.
