[1] Sun Yat Sen Univ, Zhongshan Sch Med, Dept Histol & Embryol, Guangzhou, Guangdong, Peoples R China
[2] Sun Yat Sen Univ, Zhongshan Sch Med, Dept Electron Microscope, Guangzhou, Guangdong, Peoples R China
[3] Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 9, Sch Med, Shanghai, Peoples R China
[4] Sun Yat Sen Univ, Inst Spinal Cord Injury, Guangzhou, Guangdong, Peoples R China
[5] Nantong Univ, Coinnovat Ctr Neuroregenerat, Nantong, Jiangsu, Peoples R China
[6] Sun Yat Sen Univ, Zhongshan Sch Med, Guangdong Prov Key Lab Brain Funct & Dis, Guangzhou, Guangdong, Peoples R China