
Keywords: NP; nucleus pulposus; AF; annulus fibrosus; CEP; cartilaginous endplate; ECM; extracellular matrix; PG; proteoglycan; CS/DS; chondroitin sulfate/dermatan sulfate; HIF; hypoxia Inducible Factor; HS; heparan Sulfate; HA; hyaluronic Acid; GlcAT-I; β-1,3-glu