Leishmania RNA Virus 1 (IMAGE) McGill University Caption Leishmania exosomes (left) are used by the parasite for communication purposes. The Leishmania RNA virus 1 (center and top right) uses the exosome in order to gain an envelope and avoid detection. Credit Martin Olivier Usage Restrictions Single use License Licensed 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.