1. Interdisciplinary Materials Science Program, ∥Vanderbilt University Center for
Structural Biology, and ■Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37232, United States
2. Vanderbilt University Institute of Imaging Science (VUIIS), §Center for Molecular
Probes, ⊥Department of Radiology and Radiological Sciences, #Department of Biochemistry, ¶Vanderbilt-Ingram Cancer Center (VICC), and ▽Department of
Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States