ALI	acute lung injury
ARDS	acute respiratory distress syndrome
BALF	bronchoalveolar lavage
C	catechin
CAF	caffeine
CG	catechin gallate
Con A	concanavalin A
COVID-19	coronavirus disease 2019
CPE	cytopathic effects
EC	epicatechin
ECG	epicatechin gallate
EGC	epigallocatechin
EGCG	epigallocatechin gallate
GC	gallocatechin
IFA	immunofluorescence assay
LPS	lipopolysaccharide
3-MA	3-methyladenine
MERS	middle east respiratory syndrome
MTS	3-(4, 5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium
OVA	ovalbumin/alum
ROS	reactive oxygen species
SARS	severe acute respiratory syndrome
SARS-CoV	severe acute respiratory syndrome-associated coronavirus