Neutralizing nanobodies bind SARS-CoV-2 spike RBD and block interaction with ACE2 - Huo, J; Le Bas, A; Ruza, RR; Duyvesten, HME; Mikolajek, H; Malinauskas, T; Tan, TK; Rijal, P; Dumoux, M; Ward, PN; Ren, J; Zhou, D; et al. (Nature Structural and Molecular Biology, 2020)