The team at IrsiCaixa (IMAGE) ICFO-The Institute of Photonic Sciences Caption Caption: from left to right: Jorge Carrillo and Marisa Rodriguez from the Immunology Group at IrsiCaixa Credit IrsiCaixa 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.