1. Biomedical Nanotechnology Center
2. State Key Laboratory of Bioreactor Engineering
3. East China University of Science and Technology
4. Shanghai 200237
5. P. R. China
6. Department of Bioproducts and Biosystems Engineering
7. University of Minnesota
8. Minnesota 55108
9. USA
10. National Key Laboratory of Biochemical Engineering
11. Institute of Process Engineering
12. Chinese Academy of Sciences
13. Beijing 100190