Tissue-Engineered Vascular Graft (IMAGE) University of Pittsburgh Caption A biodegradable graft with controlled drug delivery. Credit Jonathan Vande Geest / University of Pittsburgh Usage Restrictions N/A License Original 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.