KLF4 and neoplasm: MM189 cells with ectopic Klf4 and Slug expression enforced lung colonization by increasing the total weight of lungs (0.8429±0.1060 g vs. 0.5529±0.06357 g for MM189 PB-Klf4/PB, n = 7, p<0.05, Figure 5E) and the tumor area (22.09±6.726 mm2 vs. 7.241±2.859 mm2 for MM189-Klf4/PB, n = 7, p = 0.065, Figure 5F) but not subcutaneous tumor growth (0.3717±0.07247 g vs. 0.3775±0.07247 g for MM189 PB-Klf4/PB, n = 12, Figure 5G) when compared with MM189 expressing Klf4 alone.