Cryo-electron Microscopy of Influenza A Viruses (image) Rockefeller University Press Share Print E-Mail Caption Cryo-electron microscopy shows spikes of hemagglutinin and neuraminidase projecting from the surface of influenza A viruses. Credit Kosik et al., 2019 Usage Restrictions Reporters may freely use these materials in news coverage with the appropriate credit information. Share Print E-Mail 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.