1 Division of Rheumatology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Bursky Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO 63110, USA.
2 Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
3 Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Bursky Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO 63110, USA.
4 Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA. Electronic address: mcolonna@wustl.edu.