SARS-CoV-2 virus particles (IMAGE) Princeton University Caption Electron microscopy shows SARS-CoV-2 virus particles (blue) binding to cells in human lung tissue grafts. Credit Electron microscopy images were taken by Maria Ericsson (Harvard Medical School) and edited (pseudocoloring) by Florian Douam (Boston University) Usage Restrictions Use with original credit. 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.