Backhed and Clement (IMAGE) University of Gothenburg Caption Prof. Fredrik Backhed, University of Gothenburg and Prof. Karine Clement, Sorbonne University Credit Photo: Johan Wingborg 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.