1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, P. R. China
2. Experimental and Research Animal Institute, Sichuan University, Chengdu 610207, P. R. China
3. Life Science Core Facilities, College of Life Sciences, Sichuan University, Chengdu 610065, P. R. China
4. School of Aeronautics and Astronautics, Sichuan University, Chengdu 610207, P. R. China
5. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China