Bonn-Based Scientists Fitted a Cytochrome Molecule with a Magnetic Label (image) University of Bonn Share Print E-Mail Caption In this case, part of the cytochrome (red) itself acted as a second label; no further marker was thus required. Using their method, the researchers were then able to ascertain the distance between both labels. Credit © AG Schiemann/Uni Bonn Usage Restrictions This photo may be used with the press release. Share Print E-Mail 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.