Protein-RNA vesicles (fluorescence microscopy) (IMAGE) University at Buffalo Caption A fluorescence microscopy image shows protein-RNA vesicles created in the lab. The vesicles -- hollow, spherical sacks -- were made without traditional lipid building blocks. Credit Ibraheem Alshareedah Usage Restrictions This image may only be used with news stories discussing the research in the associated press release. 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.