Arthritis biomaterial (IMAGE) University of California - San Diego Caption Scanning electron micrograph of biodegradable microparticles that reprogram immune cells to protect joints against inflammatory arthritis. Imaged at UC San Diego's Nano3 facility, Jacobs School of Engineering. Credit David McBride, UC San Diego Usage Restrictions Please credit: David McBride, UC San Diego License Original 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.