CDX2 and neoplasm: As shown in Fig. 2C, the percentage of apoptotic tumor cells in the LV-CDX2-GFP group was 17.32±2.5%, which was significantly higher compared with that observed in the LV-GFP-NC (7.2±1.7%) and PBS (6.6±1.8%) groups, demonstrated using the TUNEL method (P<0.05).