1. Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
2. Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA.
3. Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
4. Department of Microbiology, University of Pennsylvania, Philadelphia, PA 19104, USA.
5. National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA.
6. High Throughput Screening Core, University of Pennsylvania, Philadelphia, PA 19104, USA.
7. Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
8. Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.
9. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.