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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DIAGRAM: GASTROINTESTINAL: GI: ARTERY: Vessel Wall Maintenance: Role of Autocrine and Paracrine Factors, characteristics of normal endothelium; A=endothelial cell, B=smooth muscle cell