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A plastic container, measuring about 1 x ½ in, that holds a video camera, batteries, antennas, and flash. It is swallowed and allowed to pass through the intestinal tract, where it is used to obtain images of the small intestine.
The device is typically used to find the cause of gastrointestinal blood loss in patients who have no evidence of bleeding in the esophagus, stomach, duodenum, and colon.
See also: capsule