MAGNETIC 3 (IMAGE) Rice University Caption Rice University researchers prepare a batch of iron-oxide nanoparticles for experiments. They have discovered the particles, along with strong magnets, can be used to open gaps for drug delivery between the endothelial cells that line blood vessels. From left, Gang Bao, Sheng Tong and Linlin Zhang. Credit Jeff Fitlow/Rice University 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.