Inhibition of CDK9 reduces ovarian cancer cell migration. A, B) Relative migration distance of SKOV3 and OVCAR8 cells at different time points (0, 24, 48, and 72 h) when treated with the CDK9 inhibitor LDC067. Original magnification value, ×200. C, D) Quantification of cell migration distance of SKOV3 and OVCAR8 cells after LDC067 treatment. **P < 0.01 compared with the cell only group.