1. Department of Anatomy, Basic Medical Institute, Chengde Medical College, Chengde 067000, Hebei, China
2. Department of Immunology, Basic Medical Institute, Chengde Medical College, Chengde 067000, Hebei, China
3. Institute of Basic Medicine, College of Basic Medicine, Chengde Medical College, Chengde 067000, Hebei, China
4. Institute of Traditional Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei,. China