[1] Stanford Univ, Inst Stem Cell Biol & Regenerat Med, Sch Med, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Pathol, Sch Med, Stanford, CA 94305 USA
[3] Stanford Univ, Sch Med, Dept Pathol, Stanford, CA 94305 USA
[4] Stanford Univ, Dept Neurol & Neurosci, Div Neuroimmunol, Stanford, CA USA
[5] Stanford Univ, Multiple Sclerosis Ctr, Stanford, CA USA
[6] Stanford Univ, Sch Med, Dept Neurol & Neurol Sci, Stanford, CA USA