Structural basis of broad SARS-CoV-2 cross-neutralization by affinity-matured public antibodies Dahkki Sheward, DJ, Pushparaj, P, Das, H, Greaney, AJ, Kim, C, Kim, S, Hanke, L, Hyllner, E, Dyrdak, R, Lee, J, Dopico, XC, Dosenovic, P, Peacock, TP, McInerney, GM, Albert, J, Corcoran, M, Bloom, JD, Murrell, B, Karlsson Hedestam, GB, Hällberg, BM