RBD of Spike Protein (IMAGE) University of North Carolina Health Care Caption Illustration of the human antibody latching onto the receptor binding domain (RBD) of the spike protein of SARS-CoV-2. Credit UNC School of Medicie Usage Restrictions credit properly 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.