Affiliation: | 1. Wellcome Trust – Medical Research Council Centre for Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK;2. Cancer Research UK Cambridge Research Institute, Robinson Way, Cambridge CB2 0RE, UK;3. Centre for Stem Cells and Regenerative Medicine, King''s College London, 28th Floor, Guy''s Tower, London SE1 9RT, UK |