1. Centre for Immunobiology, Blizard Institute, Queen Mary University of London, London E1 2AT, UK.
2. Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK.
3. Barts Health Ear, Nose and Throat Service, Royal London Hospital, London E1 1BB, UK.
4. Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London EC1M 6BQ, UK.
5. Francis Crick Institute, London NW1 1AT, UK.
6. Flow Cytometry Core Facility, Blizard Institute, Queen Mary University of London, London E1 2AT, UK.
7. Theory of Condensed Matter, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0EH, UK.