Protein-RNA vesicles (polarization microscopy) (IMAGE) University at Buffalo Caption A polarization microscopy image of protein-RNA vesicles created in the lab. The vesicles -- hollow, spherical sacks -- were made without traditional lipid building blocks. The microscopy image shows an optical birefringent pattern typical of liquid crystalline materials. Credit Ibraheem Alshareedah Usage Restrictions This image may only be used with news stories discussing the research in the related 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.