aDevelopmental and Molecular Pathways
bEpigenetics, Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
cDuke University, Center for Drug Discovery and Department of Neurobiology, Durham, North Carolina
dThe Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts, USA
Correspondence to Dr Cecile Spielewoy Blaustein, PhD, Developmental & Molecular Pathways, Novartis Institutes for Biomedical Research, 100 Technology Square, Office 8401, Cambridge, MA 02139, USA
Tel: +1 617 871 3646; fax: +1 617 871 7066; e-mail: [email protected]
Ralf S. Schmid and Naomi Tsujimoto contributed equally to this work.
Received 2 November 2007; accepted 11 December 2007
