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Representative images of CD47, SIRPA, CD68, and CD163 immunostaining in non-neoplastic colonic mucosae and colorectal cancer (CRC) tissues. CD47 was weakly expressed on the cytomembrane of non-neoplastic colonic epithelial cells. CRC cells expressed CD47 on the cytomembrane. Non-neoplastic colonic mucosae and colon cancer stroma contained immune cells positive for signal regulatory protein-alpha (SIRPA), CD68, or CD163. Bar, 100 μm.
