MKI67 and cervical cancer: Ki67 is a marker to test the active proliferation of tumor cells, and we could see from the staining results that Mg-Ca-nHAC group had the lowest expression of Ki67, and the tumor cells were not in the stage of active proliferation, which also indicated that Mg-Ca-nHAC group significantly inhibited the growth of cervical cancer (as was shown in Figure 9K).