1. Institute of Pathology, Southwest Hospital, Third Military Medical University, Chongqing, China
2. Basic Research Program, SAIC-Frederick, Inc., Frederick, Maryland
3. Department of Pathology, Daping Hospital, Third Military Medical University, Chongqing, China
4. Laboratory of Molecular Immunoregulation, Center for Cancer Research, National Cancer Institute at Frederick, National Institutes of Health, Frederick, Maryland