MKI67 and neoplasm: KO displayed around 50% less Ki67+ cells normalized to DAPI + cells (equivalent of the entire cell population), compared to tumor-bearing WT mice (WT: n = 6; mean = 30.07% ± 14.33 SD; KO: n = 7; mean = 15.45% ± 6.48 SD; p = 0.033; Fig. 1F).