SARS CoV2's Sugar Coated Shield (IMAGE) Biophysical Society Caption Image of the SARS-CoV-2 spike in the active position. Dark blue glycans shield the spike from the immune system, participate in activation, and stabilize the active form. The receptor binding domain changes shape in order to bind human cells is shown in cyan. Credit Image credit: Lorenzo Casalino, Amaro Lab, UCSD. Usage Restrictions None 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.