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Effect of downregulating miR200a expression on the proliferation of A549 cells. Effect of downregulating miR200a on (A) miR200a expression and (B) the proliferation of A549 cells. ##P<0.01 vs. the BEAS-2B cell group; **P<0.01 vs. the miR-negative control-transfected A549 cells. miR/miRNA, microRNA.
