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: Pathogenesis of Atherosclerosis - 10 of 13; At this point, fatty streaks may become directly converted to fibrous plaques through release of growth factors from macrophages, endothelial cells, or both. At some sites, endothelial cells may separate, exposing the foam cells, which in