Alteration of oligodendrocyte precursor cells in aged rat models after transient cerebral ischemia 
Li Hua-jie, Wu Jian, Zhu Lin-feng, Tang Xiao-chun
Chinese Journal of Tissue Engineering Research . 2012, (20): 3694 -3697 .  DOI: 10.3969/j.issn.1673-8225.2012.20.019