Effects of different storage solutions on the viability of umbilical cord mesenchymal stem cells 
Zhou Nan, Chen Yan, Lei Xin, Dong Yan-ting, Xu Wen-jing, Niu Yu-hu, Niu Bo, Cheng Niu-liang
Chinese Journal of Tissue Engineering Research . 2014, (14): 2153 -2158 .  DOI: 10.3969/j.issn.2095-4344.2014.14.004