1. Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
2. MaxCyte Inc., Gaithersburg, MD 20878, USA.
3. Cancer Research Technology Program, Leidos Biomedical Research Inc., Frederick, MD 21701, USA.
4. Laboratory of Immunoregulation, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.