Science Magazine | AAAS: Science Translational Medicine Follow Complement augments antibody neutralization of SARS-CoV-2 variants | Science Translational Medicine Complement C1q and C3 potentiate neutralization activity of anti-S2 antibodies against SARS-CoV-2 variants via the Fc region. https://www.science.org/doi/10.1126/scitranslmed.aec6027 science.org