NREP and neoplasm: The decrease of NREP (Fig. 5C) and Ki67 (Fig. 5D) mRNA expression, fewer NREP-positive cells (Fig. 5E) and Ki67-positive cells (Fig. 5F), and an increase of red fluorescence of TUNEL images (Fig. 5G) were observed in NREP silenced cells formed tumor tissues.