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Immunohistochemistry of duodenal mucosa for inflammatory mediators. The expression of MPO (a), Lf (c), and iNOS (e) in duodenal biopsies from adult patients with cholera at the acute stage of infection is depicted. Sections from healthy adult controls stained for MPO (b), Lf (d), and iNOS (f) are also shown. Arrow shows immunoperoxidase-labeled cells. Magnification, ×320.
