1. Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY
2. Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY
3. Department of Cancer Biology, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
4. Department of Pharmacology, University of North Carolina, Chapel Hill, NC
5. Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC
6. Wadsworth Center, New York State Department of Health, Albany, NY
7. Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA
8. Department of Physics and Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA