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: CARDIOVASCULAR: HEART: Mitral Valve Prosthesis: Gross natural color close-up view of atrial surface of valve that has been in place for 15 years Starr Edwards valve shows concentric fibrosis around valve ring with atherosclerosis yet