Injectable exosome-functionalized extracellular matrix hydrogel for metabolism balance and pyroptosis regulation in intervertebral disc degeneration可注射外泌体功能化细胞外基质水凝胶在椎间盘退变中的代谢平衡和焦亡调节作用JOURNAL OF NANOBIOTECHNOLOGYIF12.62021-09-06151OAAI