1. Department of Pharmaceutical Sciences, University of California, Irvine, CA 92697, USA
2. Vaccine Research and Development Center, University of California, Irvine, CA 92697, USA
3. Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697, USA
4. Department of Biomedical Engineering, University of California, Irvine, CA 92697, USA
5. Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA