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![Regulation of ABCB1 activity by microRNA-200c and microRNA-203a in breast cancer cells: the quest for microRNAs' involvement in cancer drug resistance](https://image.oaes.cc/50463cbf-1b85-442a-b2a7-866ef9cf02e9/3114.fig.3.jpg)
Figure 3. Expression levels of miR-200c and miR-203 in MCF-7 and KCR cell lines. miR-200c (A) and miR-203 (B) was assessed by RT-qPCR and values are represented as the mean relative expression of three independent experiments and three replicates per sample normalized to U6 snRNA ± standard deviation. ** P < 0.01