Scientists at the University of Bonn (IMAGE) University of Bonn Caption Scientists at the University of Bonn have found a way to specifically mark multipotent stromal cells. These cells therefore light up green in the microscope image. Credit (c) Martin Breitbach/Uni Bonn Usage Restrictions This photo may be used 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.