Figure 6. Effect of local HO-2 knockdown on injury induced MMP-2 and MMP-9 mRNA expression. Corneal mRNA levels of A: MMP-2 and B: MMP-9 in uninjured corneas and in control- and HO-2-shRNA-treated corneas 2, 4, and 7 days post epithelial debridement (*p<0.05 from uninjured, n=2–5).