PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 32995773-5 2021 S2GDeltaHR2 elicited two-fold-higher NAb titers than the proline-capped spike (S2P), while S2GDeltaHR2 SApNPs derived from multilayered E2p and I3-01v9 60-mers elicited up to 10-fold higher NAb titers. Proline 57-64 surface glycoprotein Severe acute respiratory syndrome coronavirus 2 72-77