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. 2019 Mar 19;17:53. doi: 10.1186/s12957-019-1594-8

Fig. 3.

Fig. 3

Immunohistochemistry of the tumor specimen (× 20). Immunohistochemistry of the resected tissue specimen was positive for cytokeratin (CK) 5/6, and caudal-type homeobox protein 2 (CDX2), slightly positive for CK20, and negative for p63, p40, and CK7