1. Student Brigade, Third Military Medical University, Chongqing, China
2. Chongqing Key Laboratory of Neurobiology, Department of Neurobiology, Third Military Medical University, Chongqing, China
3. Development and Regeneration Key Lab of Sichuan Province, Department of Anatomy and Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, China