Peng Y, Chen X, Zhang Q, Liu S, Wu W, Li K, Lin H, Qing X, Xiao Y, Wang BC, et al. Enzymatically Bioactive Nucleus Pulposus Matrix Hydrogel Microspheres for Exogenous Stem Cells Therapy and Endogenous Repair Strategy to Achieve Disc Regeneration. Adv Sci (Weinh). 2023:e2304761.