3D	3-dimensional
α-SMA	α-smooth muscle actin
ANOVA	Analysis of variance
BSA	Bovine serum albumin
DMEM	Dulbecco’s modified eagle medium
ECM	Extracellular matrix
ELISA	Enzyme-linked immunosorbent assay
ERK	Extracellular signal-regulated kinase
FBS	Fetal bovine serum
IL	Interleukin
ILD	Interstitial lung disease
IPF	Idiopathic pulmonary fibrosis
LDH	Lactate dehydrogenase
LSD	Least significant difference
PBS	Phosphate-buffered saline
PSF	Penicillin-streptomycin fungizone
PDGF	Platelet-derived growth factor
PDGFR	Platelet-derived growth factor receptor
SSc	Systemic sclerosis
SEM	Standard error of the mean
TGF-β	Transforming growth factor-β