1. National Institute of Allergy and Infectious Diseases, National Institutes of Health 1 Lymphocyte Biology Section, Laboratory of Immune System Biology, , Bethesda, MD, USA
2. Stanford University School of Medicine 2 Department of Molecular and Cellular Physiology and Structural Biology, , Stanford, CA, USA
3. Center for Cancer Research, National Cancer Institute 3 Immunodynamics Group, Laboratory of Integrative Cancer Immunology, , Bethesda, MD, USA
4. National Institute of Allergy and Infectious Diseases, National Institutes of Health 4 Signaling Systems Section, Laboratory of Immune System Biology, , Bethesda, MD, USA
5. National Institute of Allergy and Infectious Diseases, National Institutes of Health 5 Biological Imaging Section, Research Technologies Branch, , Bethesda, MD, USA
6. Howard Hughes Medical Institute, Stanford University School of Medicine 6 , Stanford, CA, USA