Small extracellular vesicles from mesenchymal stem cells: A potential Weapon for chronic non-healing wound treatment oleh Qian Wei, Xi Liu, Jian-Long Su, Ya-Xi Wang, Zi-Qiang Chu, Kui Ma, Kui Ma, Kui Ma, Qi-Lin Huang, Hai-Hong Li, Xiao-Bing Fu, Xiao-Bing Fu, Xiao-Bing Fu, Cui-Ping Zhang, Cui-Ping Zhang, Cui-Ping Zhang