Drug-delivery system (IMAGE) Massachusetts Institute of Technology Caption The drug-delivery system includes an actuator that repeatedly inflates and deflates the device for five minutes every 12 hours. This mechanical deflection prevents immune cells from accumulating around the device. Credit Courtesy of the researchers Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.