Engineered Multivalent Nanobodies Potently and Broadly Neutralize SARS-CoV-2 Variants. - Zupancic JM; Schardt JS; Desai AA; Makowski EK; Smith MD; Pornnoppadol G; Garcia de Mattos Barbosa M; Cascalho M; Lanigan TM; Tessier PM (Advanced therapeutics, 2021)