PASC	Post-acute sequelae of COVID-19
LC	Long COVID
ACE	Angiotensin-converting enzyme
ACE2	Angiotensin-converting enzyme 2
rhACE2	Recombinant human angiotensin-converting enzyme 2
RBD	Receptor-binding domain
RBM	Receptor-binding motif
mAb/mAbs	Monoclonal antibody/Monoclonal antibodies
Ab/Abs	Antibody/Antibodies
EDTA	ethylenediaminetetraacetic acid
Vmax	Maximum velocity
Km	Michaelis constant
GI	Gastrointestinal
abzymes	Antibodies with catalytic activity
kcat	Turnover number
S	SARS-CoV-2 Spike protein
FP	SARS-CoV-2 fusion peptide
DMEM	Dulbecco’s Modified Eagle Medium
FBS	Fetal bovine serum
MES	2-(N-morpholino)ethanesulfonic acid
ELISA	Enzyme-Linked Immunosorbent Assay
ddH2O	Double-distilled water
DMSO	dimethyl sulfoxide
MCA	7-methoxycoumarin-4-acetic acid
RFU	Relative fluorescence units
IgG	Immunoglobulin G
SLE	Systemic lupus erythematosus
CDR	Complementarity-determining region
HPLC	High-performance liquid chromatography