Figure 4. Foci formation ability of SLC30A1, SERPINB2 or AKR1C1 ectopically and stably expressed in NIH3T3 cells. a. Establishment of NIH3T3 cells stably expressing SLC30A1, SERPINB2 or AKR1C1. b. Colony number (mean ± SE) of cells with ectopic expression of each of the three genes. *, P < 0.05 compared with vector control.