1. Department of Microbiology and Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
2. Departments of Cell and Developmental Biology, Genetics, and Biology, Penn Epigenetics Program, University of Pennsylvania, Philadelphia, PA, USA.
3. Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
4. Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, USA.
5. Department of Medicine and Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
6. Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN, USA.
7. Department of Genetics and Institute for Immunology, University of Pennsylvania, Philadelphia, PA, USA.
8. Broad Institute of MIT and Harvard, Cambridge, MA, USA.
9. Division of Hematology/Oncology, Children’s Hospital, Harvard Medical School, Boston, MA, USA.