1. The State Key Laboratory for Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
2. Department of Biochemistry and Molecular Biology, University of North Dakota, Grand Forks, ND 58203-9037, USA
3. Department of Anatomy and Cell Biology, University of North Dakota, Grand Forks, ND 58203-9037, USA
4. Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA