X-Ray Story Images_03_16x9_APS photo.jpg (IMAGE) DOE/Argonne National Laboratory Caption Researchers from across the country use the Advanced Photon Source’s high-energy X-rays to determine the protein structures of the the virus that causes COVID-19. Credit (Image by Argonne National Laboratory.) Usage Restrictions none License Original 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.