1. Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, 2259 Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
2. State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
3. Department of Microbiology and Immunology, University of Otago, 720 Cumberland Street, Dunedin 9054, New Zealand
4. Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China