The mean integrated intensity of EMP2 protein expression for each category is shown using bar plots. The error bars represent the standard error of the mean; n is number of sample. (A) EMP2 expression was significantly increased in borderline (BL, P = 0.0088), clear cell (CC, P = 0.0233), endometriod (Endo, P = 0.0025), mixed (P = 0121), and serous (P = 0.0003) compared to non-malignant normal ovarian epithelium. (B) EMP2 expression was significantly higher in borderline (P = 0.0088), early stage (P = 0.0021) and advance stage tumors (P = 0.0003) compared to non-malignant normal ovarian epithelium. There was a trend towards higher EMP2 expression from borderline to early to advance stage tumors, however, these differences were not statistically significant.