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The effect of WS on MMP-2 and MMP-9 mRNA expression in lung and gelatinolytic activity in BAL and serum. Expression of MMP-2 (A) and MMP-9 (B) mRNAs in lung and gelatinolytic activity in BAL (C) and serum (D). qRT-PCR detected the mRNA levels of MMP-2 and MMP-9. Gelatinolytic zymography detected the gelatin activity of MMP-2 and MMP-9 in BAL and serum of WS treated guinea pigs (n = 8). * p < 0.05, ** p < 0.01 compared with the control.
