1. Department of Biochemistry and Molecular Biology, Binzhou Medical College, 264003 Yantai, Shandong Province, People's Republic of China.
2. Center Laboratory of Cell Biological Therapy for Cancer, The PLA 107th Hospital of Jinan Military Region, Affiliated to Binzhou Medical College 264002 Yantai, Shandong Province, People's Republic of China.
3. Department of Biotechnology, Binzhou Medical College, 264003 Yantai, Shandong Province, People's Republic of China.
4. Department of Histology and Embryology, Second Military Medical University, Xiangyin Road 800, 200433 Shanghai, People's Republic of China.
5. Department of Spinal Cord Repairing, General Hospital of Jinan Military Region, 250031 Jinan, Shandong Province, People's Republic of China