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TLR2+ cells in the epithelial monolayer of the human colon express IEC-specific cytokeratins. Double staining of the colon with IEC-specific anti-multicytokeratin (FITC) and anti-TLR2 (Texas red) antibodies is shown. The asterisk shows a TLR2+multicytokeratin+ cell in the intestinal crypt. Magnification: ×400. Scale bar = 50 μm.
