Fig. 3. Immunohistochemical staining and quantification of inducible nitric oxide synthase in the gut (brown  color) and identification of macrophages in intestinal tissue. iNOS = inducible nitric oxide synthase; LPS = lipopolysaccharide; TEA = thoracic epidural anesthesia. A , Group LPS+TEA−. B , Group LPS+/TEA+. C , Group LPS−/TEA−. Arrows  show examples of macrophages expressing iNOS. Scale bar = 20 µm. Data in the graph are median, quartiles and range. *P < 0.05 versus  LPS−/TEA−, #P < 0.05.

Fig. 3. Immunohistochemical staining and quantification of inducible nitric oxide synthase in the gut (brown  color) and identification of macrophages in intestinal tissue. iNOS = inducible nitric oxide synthase; LPS = lipopolysaccharide; TEA = thoracic epidural anesthesia. A , Group LPS+TEA−. B , Group LPS+/TEA+. C , Group LPS−/TEA−. Arrows  show examples of macrophages expressing iNOS. Scale bar = 20 µm. Data in the graph are median, quartiles and range. *P < 0.05 versus  LPS−/TEA−, #P < 0.05.

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