1 1] Epigenetics Programme, Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK, and at the Centre for Trophoblast Research, University of Cambridge. [2] Wellcome Trust Sanger Institute, Cambridge.
2 Epigenetics Programme, Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK, and at the Centre for Trophoblast Research, University of Cambridge.