Researcher with Custom 3-D-Printed Model (IMAGE) University of California - San Diego Caption This is Jason Caffrey, an MD student with a PhD in bioengineering, spearheaded the 3-D-printing effort. Credit University of California San Diego Usage Restrictions Please credit University of California San Diego 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.