PEIR Digital Library

Welcome to the Pathology Education Informational Resource (PEIR) Digital Library, a multidisciplinary public access image database for use in medical education.

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00226691

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ENDOSCOPY: GASTROINTESTINAL: GI: DUODENUM: ULCER,PEPTIC;DUODENUM,DESC.,VISIBLE VESSEL; A1RS,DU POST-BULBAR VISIBLE VESSEL