Three Classes of Nanobodies (IMAGE) University of Pittsburgh Caption The first systematic classification of ultrapotent nanobodies reveals that the microscopic molecules work against SARS-CoV-2 in three ways. Credit CWRU Usage Restrictions For use with this press release. 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.