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Figure 4 Immunohistochemical staining in epithelioid malignant mesothelioma. (A) Diffuse, strong staining for pan‐cytokeratin. (B) Cytoplasmic cytokeratin 5/6 staining. (C) Calretinin stains both the nuclei and cytoplasm. (D) D2‐40 exhibits a membranous staining pattern. Case (D) a kind gift from James Burchette, Duke University, Durham, North Carolina, USA.
