(IMAGE) Kumamoto University Caption (Left) The expression levels of microRNAs in extracellular vesicles extracted from chemoradiation-responder and chemoradiation-non responder patients were compared, and 42 microRNAs were picked up that were elevated in the inactive patients. (Right) The expression levels of microRNAs in extracellular vesicles extracted from radiation-sensitive and radiation-resistant cells were compared, and 142 microRNAs were picked up. (Mid-bottom) Preliminary experiments were conducted using three macroRNAs whose expression was up-regulated in both, and finally miR-503-3p was identified as a microRNA involved in radioresistance. Credit Dr. Ryoji Yoshida Usage Restrictions To use this media elsewhere, the authors request that a reference to this release be included. License Original 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.