Fig. 1From: Application of stem cells in the repair of intervertebral disc degenerationIL and TNF-α are involved in multiple pathological processes of IDD. AF annulus fibrosus, CEP cartilaginous endplates, ECM extracellular matrix, IL interleukin, IVD intervertebral disc, NP nucleus pulposus, TNF tumor necrosis factorBack to article page