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Effect of PME on MMP-9 transcription in MCF7 cells. (a) MCF7 cells were incubated with PME (40, 80, and 160 μg/mL) and E2 (10 nM) for 24 hrs and semiquantitative RT-PCR was done. (b) shows the ratio of density of MMP-9 gene expression to that of endogenous control GAPDH and it represents mean ± SE of 3 replicates (*P < 0.05).
