CCNB1 and hepatocellular carcinoma: Next, in order to explore the effect of miR-199a-3p on HCC by targeting CDK1 and CCNB1, HepG2 cells were transfected into inhibitor NC + si-NC, miR-199a-3p inhibitor + si-NC, inhibitor NC + si-CDK1, miR-199a-3p inhibitor + si-CDK1 groups, and Huh-7 cells were transfected into inhibitors NC + si-NC, miR-199a-3p inhibitor + si-NC, inhibitor NC + si- CCNB1, miR-199a-3p inhibitor + si-CCNB1 groups.