[1] Univ Med, Charite, Inst Med Immunol, Berlin, Germany
[2] Kings Coll London, Dept Nephrol & Transplantat, London WC2R 2LS, England
[3] Univ Libre Bruxelles, Inst Med Immunol, Brussels, Belgium
[4] Univ London Imperial Coll Sci & Technol, Dept Immunol & Renal Med, London, England
[5] Univ Oxford, John Radcliffe Hosp, Nuffield Dept Surg, Oxford OX3 9DU, England
[6] INSERM, ITERT, U643, Nantes, France
[7] Miltenyi Biotech GmbH, MACS Mol Business Unit, Bergisch Gladbach, Germany