1. From Neuroimmunology Research (X.R., A.A.V., H.O.), R&D31, Portland VA Medical Center, Portland, OR; and the Departments of Anesthesiology and Perioperative Medicine (X.R., K.A., P.D.H., H.O.), Neurology (A.A.V., H.O.), and Molecular Microbiology & Immunology (A.A.V.), Oregon Health & Science University, Portland, OR.