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Immunohistochemistry of TLR2 in NCT (×10, a) (×20, b) and CT (×10, c) (×20, d). All layers of the tissue specimens were stained, and TLR2 expression in mucosal epithelial cells was stronger in CT than in NCT (arrow heads). Expression of TLR2 in the lamina propria was weakly positive in both NCT and CT (a, b, c, d)
