1. State Key Laboratory of Materials-Oriented Chemical Engineering; College of Food Science and Light Industry; Nanjing Tech University; Nanjing 211816 P. R. China
2. Department of Immunology; Medical Research Center; China Academy of Chinese Medical Sciences; Beijing 100083 P. R. China
3. Department of Biochemistry; School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; Tokyo 192-0392 Japan
4. Department of Comparative Medicine; Nanjing General Hospital of Nanjing Military Command; No. 305 Zhongshan East Road Nanjing 210002 China