1. Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
2. Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States
3. School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
4. Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, China
5. HKU-Pasteur Research Pole, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China