Iron Oxide Nanoparticles (IMAGE) University of Minnesota Caption A transmission electron microscopy (TEM) image shows the iron oxide nanoparticles coated in a mesoporous silica that are used in the tissue warming process. Credit Haynes research group, University of Minnesota Usage Restrictions None 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.