1. Department of Biomedical, Biological and Chemical Engineering, University of Missouri, Columbia, Missouri 65211, United States
2. Electron Microscopy Core, University of Missouri, Columbia, Missouri 65211, United States
3. Department of Mechanical & Aerospace Engineering, University of Missouri, Columbia, Missouri 65211, United States
4. Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, United States
5. Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States