(A) Typical bands of protein Cdc25A, p21, Cdk2, Cdk4, Cyclin D1, Cyclin A, Cyclin E of A2780/CP70 and OVCAR-3 cells after treating with TFS (0, 0.5, 1.0 and 1.5 μg/ml) for 24 h. (B, C) Expression levels of Cdc25A, p21, Cdk2, Cdk4, Cyclin D1, Cyclin A and Cyclin E in A2780/CP70 and OVCAR-3 cells were measured and normalized to that of GAPDH protein. n=3, *P < 0.05, **P < 0.01 and ***P < 0.001 versus control.