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Expression of polβ restored the function of miR‐149. A, IC50 values of cisplatin on the proliferation of EC1 and EC9706 cell lines following co‐transfection of pcDNA3.1‐polβ and miR‐149. B, Apoptosis in EC1 and EC9706 cell lines treated with cisplatin following co‐transfection of pcDNA3.1‐polβ and miR‐149. *P < .05
