1. Department of Molecular Medicine, Scripps Research, 120 Scripps Way, Jupiter, Florida 33458, United States
2. Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, 10550 N Torrey Pines Rd, La Jolla, California 92037, United States
3. Department of Molecular Medicine, Scripps Research, 10550 N Torrey Pines Rd, La Jolla, California 92037, United States
4. The Imaging Center and Electron Microscopy Core Facility, Max Planck Florida Institute for Neuroscience, 1 Max Planck Way, Jupiter, Florida 33458, United States