CDX2 and neoplasm: From day 12, the tumor volumes between the pEGFP-C1-CDX2 cell group and the untreated cell and pEGFP-C1 cell groups were significantly different (P<0.05) and by day 20, tumor volumes of 5.22±0.27, 5.19±0.30 and 2.43±0.30 cm3 were recorded in the untreated, pEGFP-C1 and pEGFP-C1-CDX2 cell groups, respectively (Fig. 2A).