There were significantly fewer tumor cells with positive Ki67 nucleus staining with the anti-Ki67 antibody in the HeLaX-E9s than in HeLaX-Ss (Fig 2K, P<0.01, P<0.001) and HeLaX-NTs (Fig 2K, P<0.05, P<0.01). The gene discussed is MKI67; the disease is neoplasm.