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Epithelial cells that cover the intestinal mucosal surface maintain immune homeostasis and tolerance in the gastrointestinal tract. However, little is known about the molecular mechanisms that regulate epithelial immune functions. Epithelial cells are distinct in that they are highly polarized; this polarity is, at least in part, established by the epithelium-specific polarized sorting factor adaptor...
Bleeding from ectopic varices of the ileum associated with portal hypertension is occasionally life-threatening. However, it is not easy to make an accurate preoperative diagnosis. A 62-year-old woman presented with hematochezia and anemia. Conventional examinations could not locate the bleeding point, but subsequent capsule endoscopy indicated gastrointestinal bleeding from hemorrhaging ileal varices...
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