Proliferative abilities of placenta-derived mesenchymal stem cells at different passages
Bai Jin-ping, Li Xiu-ying, Li Xue, Yang Qi-wei, Liu Ying-nan, Wang Yi-min
Chinese Journal of Tissue Engineering Research . 2014, (10): 1591 -1596 .  DOI: 10.3969/j.issn.2095-4344.2014.10.018