Antibodies that can disarm a virus, known as neutralizing antibodies, are key to the body’s ability to fight off infection. MIT chemists have come up with a new way to identify these neutralizing antibodies in a blood sample, by analyzing how antibodies interact with sugar molecules found on the surface of a viral protein. The new test could help to reveal whether someone has neutralizing antibodies against viruses such as SARS-CoV-2, the virus that the researchers focused on in their study. Neutralizing antibodies, which can be generated by vaccination or…