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Immunohistochemical findings of mature lymphoplasmacytic cells in esophageal lymphoepithelioma. The mature lymphocytes are positive for CD45 (A), CD20 (B), CD3 (C), CD56 (D), and CD138 (E). Expression of CD45, CD20 and CD3 are broad, while expression of CD56 and CD138 is only focal. Immunostaining, x200.
