ACPC	Articular cartilage progenitor cells
CCL2	Chemokine (C-C motif) ligand 2 (also referred to as MCP1)
DM	Degree of methacrylation
ELISA	Enzyme-linked immunosorbent assay
FDA	The United States Food and Drug Administration
GAG	Glycosaminoglycan
GelMA	Gelatine methacryloyl
LPS	Lipopolysaccharide
MA	Methacrylic anhydride
MCP1	Monocyte chemoattractant protein 1 (also referred to as CCL2)
MMP	Matrix metalloproteinase
MSC	Mesenchymal stem cell
Mw	Molecular weight
OA	Osteoarthritis
PAMP	Pathogen-associated molecular pattern
PBMC	Peripheral blood mononuclear cell
TLR	Toll-like receptor
TNF-α	Tumour necrosis factor alpha
UV	Ultraviolet