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Immunohistochemical staining of CXCL1 expression in COAD. Notes: CXCL1 signaling was predominantly under the observation in the cytoplasm of colon cancer cells. (A) negative staining in tumor tissues; (B) positive expression in tumor tissues; (C) negative staining in paracancerous non-tumor colon tissues; (D) positive expression in paracancerous non-tumor colon tissues. Magnification, 400×.
