ZP2 and colon carcinoma: A 75% probability of ZP2 expression (three out of four experiments) was present in colon carcinoma COLO 320HSR and SW-480 cells, a 50% probability (two out of four experiments) took place in colon carcinoma SW-948 and U251 glioma cells, and a 25% probability was present for twelve cell lines (43%).