R Fears1, G E Griffin2, D Larhammar3, V Ter Meulen1, J W M van der Meer4. 1. European Academies Science Advisory Council, German National Academy of Sciences Leopoldina, Halle (Saale), Germany. 2. Institute of Infection and Immunity, St. George's, University of London, London, UK. 3. Department of Neuroscience, Uppsala University, Uppsala, Sweden. 4. Radboud University Medical Center, Nijmegen, The Netherlands.