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miR-20b promotes migration and invasion of non-small cell lung cancer cells. Wound closure at 0 and 24 h in (A) PC-9 and (B) H1975 cells trans-fected with miR-20b mimic, miR-20b inhibitor or miR-control; scale bar, 100 µm. Transwell (C) migration and (D) invasion assays of PC-9 and H1975 cells transfected with miR-20b mimic, miR-20b inhibitor or miR-control; scale bar, 100 µm. miR, microRNA.
