This antibody labels Cytokeratin 5 and is useful for the differentiation between low differentiated squamous cell carcinoma and adenocarcinoma, and between epithelial mesothelioma and metastatic carcinoma in the pleura when using together with a panel of other antibodies (e.g. Calretinin, TTF-1). Anti-Cytokeratin 5 has also been found useful in the differential diagnosis of atypical proliferations of the breast.
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