Exosomes 2 (IMAGE) City of Hope Caption Exosomes are cellular products roughly 100 nm in diameter. This image is seen after 30,000-fold magnification under a transmission electron microscope. Graphical representation of exosomes shows packaging of therapeutic RNA with the help of scaffold protein L7ae fused to exosomal marker protein CD63. Credit Surya Shrivastava / City of Hope Usage Restrictions Please use credit information 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.