3 Department of Physics, CNR-Spin, Istituto Nazionale di Fisica Nucleare (INFN), University of Naples Federico II, Napoli, Italy.
4 Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE, United Kingdom.
5 Centre for Stem Cells and Regenerative Medicine, Kings College London, London, SE1 9RT, UK.
6 MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK.
7 QIMR Berghofer Medical Research Institute, Herston, Brisbane, Queensland, Australia.
8 Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia.
9 The Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Melbourne, Parkville, Australia.
10 Department of Haematology, Cambridge Institute for Medical Research, University of Cambridge, Cambridge Biomedical Campus, Wellcome Trust/MRC Building, Hills Road, Cambridge, CB2 0XY, UK.
11 Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK.
12 Department of Physics, CNR-Spin, Istituto Nazionale di Fisica Nucleare (INFN), University of Naples Federico II, Napoli, Italy. mario.nicodemi@na.infn.it.
13 EMBL, European Bioinformatics Institute (EBI), Hinxton, CB10 1SD, UK. st9@sanger.ac.uk.