Zika Virus Structure (IMAGE) Cell Press Caption A cryo-electron microscopy image of the Zika virus structure. The triangle highlights the asymmetric unit of the virus. Credit Richard Kuhn, Purdue University Usage Restrictions Credit Required. 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.