1. Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
2. Anti-aging Research Institution, Binzhou Medical University, Shandong 264003, China
3. School of Agriculture, Ludong University, Shandong 264003, China
4. School of Gerontology, Binzhou Medical University, Shandong 264003, China
5. Beijing Key Laboratory of Drug Target and Screening Research, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
6. The People's Liberation Army 107 Hospital, Affiliated Hospital of Bin Zhou Medical University, Yantai 264002, China
7. Department of Microbiology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
8. School of Medicine, University of California - San Diego, La Jolla, CA 92037, USA