Covid Spike (IMAGE) Massachusetts Institute of Technology Caption New research at MIT shows that vibrations of the protein spikes on coronaviruses, including the one that causes Covid-19, play a crucial part in allowing the virus to penetrate human cells. Credit Markus Buehler and Yiwen Hu/MIT Usage Restrictions Images for download are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images. 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.