Specificity: This antibody recognizes an intermediate filament protein (IFP) of 55kDa, which is identified as cytokeratin 7. This antibody is highly specific to cytokeratin 7 and shows no cross-reaction with other IFPs. Immunogen: OTN 11, ovarian carcinoma cell line (OV-TL12/30); Semi-purified cytokeratin preparation (K72.7)