1. B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
2. Biological Imaging Section, Research Technologies Branch, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
3. Department of Microbiology, Tumor, and Cell Biology, Karolinska Institutet, Stockholm, Sweden