Institution: | 1. Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA;2. Howard Hughes Medical Institute, 77 Avenue Louis Pasteur, Boston, MA 02115, USA;3. Department of Medicine, Harvard Medical School, Boston, MA 02115, USA;4. Division of Signal Transduction, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA |