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rhTβ4 effects on conjunctival MMPs expression after BAC injury. qRT-PCR analysis of MMP-1 (A), MMP-2 (B), and MMP-9 (C) expression at day 7 after rhTβ4 administration showed that the induction of MMP-1, MMP-2, and MMP-9 mRNA by conjunctival epithelia was inhibited by rhTβ4. n = 6 mice per group, * p < 0.05; ** p < 0.01.
