Anaphylatoxin Recognition (IMAGE) University of Southern California Caption Researchers peering into the minute workings of cells reveal how immune system proteins interact to mount an immune response. Credit Jagannath Maharana/IIT Kanpur Usage Restrictions none 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.