MUC16 and ovarian benign neoplasm: To evaluate the levels and distribution of CLIC1 and CLIC4 in ovarian tissues, we performed immunohistochemistry (IHC) staining on tissue microarrays containing normal (5 normal ovary and 4 normal fallopian tube), benign ovarian tumors (n = 11) and malignant ovarian tissues (n = 55) using monoclonal antibodies to CLIC1, CLIC4 and CA125.