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Effects of AP extracts on the activities of MMP-9. KB cells were treated with 0, 25, 50, 100, 150 or 200 μg/mL of AP extracts for 24 h and then subjected to gelatin zymography to analyze the activities of MMP-9. Relative changes in protein bands were measured using densitometric analysis. Typical results from three independent experiments are shown. Results are presented as mean ± SD of three assays. *Significant difference in comparison to control group (P < .05).
