Antibodies were detected, not their activity. Here's the assay used: https://www.cell.com/cell-reports-methods/pdf/S2667-2375(22)00024-8.pdf https://www.cell.co

Antibodies were detected, not their activity. Here's the assay used: https://www.cell.com/cell-reports-methods/pdf/S2667-2375(22)00024-8.pdf https://www.cell.com/cell-reports-methods/pdf/S2667-2375(22)... Measuring antibody activity is a lot harder than measuring antibodies, just being able to assess antibody targets in a high-throughput manner is a huge and very recent step forward.