SARS-CoV-1	Severe acute respiratory syndrome coronavirus
SARS-CoV-2	Severe acute respiratory syndrome coronavirus 2
COVID-19	Coronavirus disease 2019
S	spike
RBD	Receptor binding domain
NTD	N-terminal domain
PBMC	Peripheral blood mononuclear cell
mAb	Monoclonal antibodies
ELISA	Enzyme-linked immunosorbent assay
PFA	Paraformaldehyde
BLI	Bio-layer interferometry
KD	Kinetically derived binding affinity
IC50	Half-maximal inhibitory concentration
hACE2	Human angiotensin-converting enzyme 2
RBM	Receptor-binding motif
spGFP	Split green fluorescent protein
RL	Renilla luciferase
ABSL-3	Animal Biosafety Level-III Laboratory
PEI	Polyethyleneimine
DMEM	Dulbecco’s Modified Eagle’s Medium
FBS	Fetal bovine serum
Cryo-EM	Cryo-electron microscopy
CTF	Contrast transfer function
Fab	Antigen-binding fragment
scFv	Single-chain variable fragment
SEM	Standard error of the mean
FRNT	Focus reduction neutralization test
MB	Memory B
FSC	Fourier shell correlation