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qRT-PCR for miR-4443, let7f-5p, and miR-21 in cultured HCT-116 cells with knockouts of Drosha, Exportin 5, or Dicer genes and controls. The levels of each microRNA relative to control are shown. Note logarithmic scale of vertical axis. Bars: st. dev. from biological triplicates. * p < 0.05 (t test).
