Arteriovenous graft (IMAGE) Washington University in St. Louis Caption In this rendering of an arteriovenous graft, The blue section represents a vein, the short red section an artery and the longer red section, a graft connecting the two. Credit Mohamed Zayed Usage Restrictions Use allowed with proper attribution: Mohamed Zayed, MD, at the School of Medicine at Washington University in St. Louis License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.