Cell 2015 Aug 6;162(4):885-99. Epub 2015 Aug 6.
Stem Cell Program, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Boston, MA 02115, USA. Electronic address: