TJP2 and neoplasm: Furthermore, the mean tumor size was 14.5 mm (95% CI_ 9.37 to 20.6 mm) for mice injected with Tjp2 KO B16-F10 cells and 12.8 mm (95% CI_ 9.94 to 20.23 mm) for mice injected with Tjp2 re-expressed B16-F10 cells.