CLDN	Claudin
2D	Two-dimensional
3D	Three-dimensional
EBGP	Ethanol extract of Brazilian Green propolis
EEP	Propolis ethanol extract
EGFR-TKI	Tyrosine kinase inhibitor against the epidermal growth factor receptor
EKR	Extracellular signal-regulated kinase
HIF-1	Hypoxia inducible factor-1
ICI	Immune checkpoint inhibitor
MEK	Mitogen-activated protein kinase kinase
NSCLC	Non-small cell lung cancer
PCR	Polymerase chain reaction
PDK1	Phosphoinositide-dependent kinase 1
PI3K	Phosphatidylinositol 3-kinase
ROS	Reactive oxygen species
Stat3	Signal transducer and activator of transcription 3
TER	Transepithelial electrical resistance
TJ	Tight junction
WST-1	4-[3-[4-Iodophenyl]-2-4(4-nitrophenyl)-2H-5-tetrazolio-1,3-benzene disulfonate]
ZO-1	Zonula occludens-1