Orsay Virus-Like Particle (IMAGE) Rice University Caption An Orsay virus-like particle is seen via negative-staining electron microscopy. The protruding delta fibers are highlighted by yellow stars. Credit Tao Laboratory/Zhong Lab/Rice University Usage Restrictions For news reporting purposes only. 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.