Elvira Mass, University of Bonn (IMAGE) University of Bonn Caption from the Life & Medical Sciences Institute (LIMES) and the Cluster of Excellence ImmunoSensation of the University of Bonn. Credit © Photo: Silvia Hoch/Uni Bonn Usage Restrictions This photo may be used together with the press release. 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.