MKI67 and cancer: Decreased IC50 and increased cell apoptosis for combined group, compared to single therapy, due to increased ROS generation in vitro; tumor weight on day 14 was just 6.3% and 6.7% of that of the saline group of the HeLa and HN6 cancer-bearing mice, respectively, with negligible body weight loss; widespread cancer cell necrosis and apoptosis caused by combined therapy in H&E staining images; highest TUNEL expression and lowest cancer cell proliferation in the TUNEL-staining and Ki-67 staining images, respectively