Spike protein structure (VIDEO) University of Bristol This video is under embargo. Please login to access this video. Caption Spike protein structure from BrisDelta, an early SARS-CoV-2 variant discovered in Bristol Credit Credit: Christine Toelzer, University of Bristol Usage Restrictions n/a 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.