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miR-140-3p overexpression inhibits breast cancer cell proliferation, migration and invasion. (A) miR-140-3p expression, (B) cell proliferation, ***P<0.001 miR-140-3p mimic vs. NC-mimic, or miR-140-3p inhibitor vs. NC-inhibitor (C) cell migration and (D) cell invasion in breast cancer cell lines (MCF-7 and MDA-MB-453) with synthetic RNA transfection. ***P<0.001, **P<0.01. miR-140-3p, microRNA-140-3p; NC, negative control; OD, optical density.
