Activity of intervertebral disc stem cells and nucleus pulposus mesenchymal stem cells in intervertebral disc niche condition 
Hu Wei, Tong Min, Yang Tao, Xiong Wei, Huang Yifei
Chinese Journal of Tissue Engineering Research . 2020, (19): 2953 -2958 .  DOI: 10.3969/j.issn.2095-4344.2041