TEM (IMAGE) Sanford Burnham Prebys Caption Negative-stain transmission electron microscopy was used to confirm the isolation of small extracellular vesicles in mouse neurons (shown above), as well as in mouse astrocytes and microglia. Image courtesy of the Chun lab. Credit The Chun lab Usage Restrictions N/A 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.