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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GROSS: GASTROINTESTINAL: GI: ARTERY: CIRCLE OF WILLIS, CLOSE-UP OF ANTERIOR CIRCULATION; A=ANTERIOR CEREBRAL ARTERY; B=ANTERIOR COMMUNICATING ARTERY; C=INTERNAL CAROTID ARTERY