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qRT-PCR for MMP2 and MMP9. RNA was isolated after 24 and 48 h treatment with DOX 1 μg/ml, EGCG 10 μg/ml, and combined treatment with DOX+EGCG at the aforementioned concentrations. MMP9 (A) and MMP2 (B) mRNA expression was shown as a percentage of treated on control samples (CTR). Each bar represents the mean (± S.D.) of three independent experiments. *P<0.05, **P<0.01, n.s.: not significant.
