[1] Yale Univ, Sch Med, Dept Cell Biol, New Haven, CT 06510 USA
[2] Yale Univ, Sch Med, Program Cellular Neurosci Neurodegenerat & Repair, New Haven, CT 06510 USA
[3] Yale Univ, Sch Med, Kavli Inst Neurosci, New Haven, CT 06510 USA
[4] Yale Univ, Sch Med, Howard Hughes Med Inst, New Haven, CT 06510 USA