Polymer Crystalsome (IMAGE) Drexel University Caption Researchers at Drexel University designed a polymer nanoparticle, called a "crystalsome," whose unique combination of polymer structures makes it exceptionally durable in the bloodstream, and an excellent candidate for intravenous drug delivery. Credit Drexel 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.