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(A) Normal mesothelium cells showing a cytoplasmatic staining for E2, Original magnification, × 100 (B) and (C) the neoplastic cells express a strong cytoplasmatic positive reaction for E2 in both epithelioid and sarcomatous mesothelioma, Original magnification, × 200. (D) Percentage of E2 and ERβ staining in human tumour samples.
