Article Information
vol. 320 no. 5872 97-100
- Received for publication December 11, 2007
- Accepted for publication February 14, 2008
- .
Article Versions
- Previous version (February 21, 2008 - 11:56).
- You are viewing the most recent version of this article.
Author Information
- 1 Stem Cell Program, Children's Hospital Boston, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Harvard Stem Cell Institute, Boston, MA 02115, USA.
- 2 Division of Pediatric Hematology/Oncology, Children's Hospital Boston and Dana Farber Cancer Institute; and Howard Hughes Medical Institute, Division of Hematology, Brigham and Women's Hospital, Boston, MA 02115, USA.
- ↵* To whom correspondence should be addressed. E-mail: rgregory{at}enders.tch.harvard.edu (R.I.G.); george.daley{at}childrens.harvard.edu (G.Q.D.)