Figure1: Immunohistochemical (IHC) analysis of PITX2、LEF-1 and β-catenin expression in ovarian cancer samples, benign ovarian tumors and normal ovarian tissues. (magnification: 400X) A1: Positive expression of PITX2 in epithelial ovcarian cancer tissues; B1: Negative expression of PITX2 in benign ovarian tumors; C1: Negative expression of PITX2 in normal ovarian tissues; A2: Positive expression of LEF-1 in epithelial ovcarian cancer tissues; B2: Weakly negative expression of LEF-1 in benign ovarian tumors; C2: Negative expression ofLEF-1 in normal ovarian tissues; A3: Positive abnormal expression of β-catenin in epithelial ovcarian cancer tissues; B3: Negative expression of β-catenin in benign ovarian tumors; C3: Negative expression of β-catenin in normal ovarian tissues.