qRT-PCRs confirm that miR-19b-3p mimic and inhibitor take effects in Capan-2 cells. Increased miR-19-3p was detected in Capan-2 cells after transfected with miR-19b-3p mimic, and decreased miR-19-3p was found in Capan-2 cells after transfected with miR-19b-3p inhibitor (n=5). *, P<0.05; **, P<0.01. NC, negative control; miR, microRNA; qRT-PCR, real-time fluorescence quantitative polymerase chain reaction.