Andrew Macpherson, University of Bern (IMAGE) University of Bern Caption Prof. Dr. med. Andrew Macpherson, Department for BioMedical Research (DBMR), University of Bern, and University Clinic of Visceral Surgery and Medicine of the Inselspital, University Hospital Bern Credit Courtesy of Andrew Macpherson Usage Restrictions None 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.