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Immunohistochemical labeling for Toll-like receptor 3 (TLR3) (A,B), TLR4 (C,D), and TLR7 (E,F) in the myenteric plexus (left column) and in the submucous plexus (right column) of murine intestine. im, inner muscle layer; om, outer muscle layer; sm, submucosa. Asterisk, Peyer's patch. Bar = 30 μm.
