PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 35617963-5 2022 The tetravalent nAb binds to the spike protein trimer at least 100-fold more tightly than bivalent IgGs (apparent KD < 1 pM) and neutralizes a broad array of SARS-CoV-2 pseudoviruses, chimeric viruses, and authentic viral variants with high potency. nab 16-19 surface glycoprotein Severe acute respiratory syndrome coronavirus 2 33-38