[1] Massachusetts Gen Hosp, Dept Neurobiol, Boston, MA 02114 USA
[2] Massachusetts Gen Hosp, Howard Hughes Med Inst, Boston, MA 02114 USA
[3] Harvard Univ, Sch Med, Boston, MA 02114 USA
[4] MIT, Ctr Learning & Memory, RIKEN MIT Neurosci Res Ctr, Cambridge, MA 02139 USA
[5] MIT, Howard Hughes Med Inst, Cambridge, MA 02139 USA
[6] Korea Adv Inst Sci & Technol, Dept Biol Sci, Taejon 305701, South Korea
[7] Univ N Carolina, Dept Cell Biol & Anat, Chapel Hill, NC 27599 USA
[8] Dana Farber Canc Inst, Dept Canc Immunol & AIDS, Boston, MA 02115 USA
[9] Harvard Univ, Sch Med, Dept Pathol, Boston, MA 02115 USA