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β-catenin expression is regulated by miR-20b. β-catenin expression in (A) PC-9 and (B) H1975 transfected with miR-20b mimic, miR-20b inhibitor or miR-control was observed using immunofluorescence imaging; β-catenin in green and nuclei in blue; scale bar, 200 µm. miR, microRNA.
