Small-angle Scattering Image (IMAGE) European Synchrotron Radiation Facility Caption This is a composite image made from two low-angle diffraction data sets, one taken with muscle fibers at rest (left), and the other with muscle fibers under isometric contraction (right). The color corresponds to the intensity of the X-rays scattered elastically at a very small angle. From the changes, the conformation of the molecular motors is computed. Credit V. Lombardi, Florence University 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.