Drug Delivery Particles (IMAGE) Penn State Caption Artist's conception of nanoparticle-carrying immune cells that target tumors and release drug-loaded nanoparticles for cancer treatment. Credit Jian Yang, Yixue Su, Penn State Usage Restrictions Non commercial use only 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.