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miR-19 overexpression and down-regulated endogenous miR-19 expression in human cancer cells. qRT-PCR-based assay was used to analyze the expression levels of miR-19 after human lung adenocarcinoma cell lines (A549 and HCC827) and NPC cell lines(CNE2 and HONE1) transfected with miR-19 mimics (100 nM) (A-B) or miR-19 inhibitor (100 nM) (C-D) for 48 hours (h). *P<0.5, #P<0.01 by one-way ANOVA.
