1. Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
2. Center for Veterinary Sciences and Comparative Medicine, University of California, San Diego, San Diego, CA 92093, USA.
3. Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA.
4. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
5. F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
6. Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.