Affiliation: | 1. Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA, USA;2. Research Group for NMR Signal Enhancement, Max Planck Institute for Biophysical Chemistry, G?ttingen, Germany;3. Center for Biostructural Imaging of Neurodegeneration, G?ttingen, Germany;4. Department of Bioengineering, University of California at Los Angeles, Los Angeles, CA, USA;5. Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA;6. The Molecular Biology Institute, Jonsson Comprehensive Cancer Center, California NanoSystems Institute, University of California at Los Angeles, USA |