Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and Institute for Molecular Infection Biology, University of Würzburg, Würzburg D-97080, Germany.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.|Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK and.