2019-nCoV	Novel coronavirus
ACE2	Angiotensin-converting enzyme 2
ADK	Adenylate kinase
ADP	Adenosine diphosphate
ALP	Alkaline phosphatase
Ap5A	P1,P5-di(adenosine-5′ pentaphosphate pentasodium salt
ATP	Adenosine triphosphate
Collagen/mucin/polyP-HG	Collagen/mucin/polyP-hydrogel
Collagen/mucin-HG	Collagen/mucin hydrogel
Collagen-HG	Collagen hydrogel
FBS	Fetal bovine serum
FT-IR	Fourier-transform infrared spectroscopy
HEPES	N-(2-hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid)
LEV	Levamisole hydrochloride
Mg-polyP-NP	Mg-polyP nanoparticles
MTT	3-[4,5-methylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide
Na-polyP	Na-polyphosphate
PAGE	Polyacrylamide gel electrophoresis
polyP	Polyphosphate
polyP40	Polyphosphate with an average chain length of 40 Pi units
qRT-PCR	Quantitative real-time polymerase chain reaction
RBD	Receptor-binding domain
SARS-CoV-2	Severe acute respiratory syndrome coronavirus 2
SEM	Scanning electron microscopy
TBE buffer	Tris-borate/EDTA buffer