1. Peter Gorer Department of Immunobiology, King’s College London, London SE19 RT, UK.
2. London Research Institute, Cancer Research UK, London WC2A 3LY, UK.
3. School of Immunity and Infection, University of Birmingham, Birmingham BI5 2TT, UK.
4. School of Cancer Studies, University of Birmingham, Birmingham BI5 2TT, UK.
5. Clinical Transplantation Department, Guy’s Hospital, London SE19 RT, UK.
6. Medical Research Council Centre for Transplantation Biology, London SE19 RT, UK.
7. Ophthalmology Department, St Thomas’ Hospital, London SE1 7EH, UK.
8. Comprehensive Biomedical Research Centre of Guy’s and St Thomas’ Hospitals and King’s College London, London SE19 RT, UK.