(IMAGE) Kumamoto University Caption A. Transmission electron microscopy images of extracellular vesicles isolated from radiation-sensitive (top) and radiation-resisitant (bottom) cells. The lower left square is a magnified image. B. Fluorescence microscopy images of extracellular vesicles taken up by radiation-sensitive cells. Upper: Extracellular vesicles derived from radiation-sensitive cell (green) are incorporated into a radiation-sensitive cell (blue). Lower: Extracellular vesicles derived from a radiation-resistant cell (red) are incorporated into a radiation-sensitive cell (blue). C. Change in radioresistance when extracellular vesicles are incorporated into a radiation-sensitive cell. The graphs show the cell viability under each condition. Gray: no treatment, Blue: treated with extracellular vesicles of radiation-sensitive cells, Red: treated with extracellular vesicles of radiation-resistant cells. Credit From Figs. 1D, 2D & 2E of Yamana K., et.al., Journal of Extracellular Vesicles, 2021. The image has been modified for use and clarity within this release. Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.