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A. TTF-1 was positive in each part of the tumor (× 40). B. Expression of CK in various parts of tumor (× 40). C. Expression of EMA in various parts of tumor (× 40). D. Expression of vimentin in various parts of tumor (× 40). E. Expression of CgA in various parts of tumor (× 40). F. Expression of Syn in various parts of tumor (× 40). G. Low expression of Ki67 in various parts of tumor (× 100). H. Expression of TTF-1 in the columnar clear cell area of tumor (× 400).
