Extracellular vesicles (IMAGE) Max Planck Institute for Marine Microbiology Caption Extracellular vesicles of the haloarchaeon Haloferax volcanii, made visible with an electron microscope. The scale bar measures 500 nm. Credit S. Erdmann/Max Planck Institute for Marine Microbiology Usage Restrictions Only to be used in the context of this publication and citing the correct copyright. 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.