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Immunohistochemical staining of renal cell carcinoma metastasis to the thyroid. The tumor cells characteristically expressed cytokeratin (A), vimentin (B), CD10 (C), and epithelial membrane antigen (D), but did not express thyroglobulin (E) or thyroid transcription factor-1 (F) (avidin-biotin-peroxidase, ×200).
