title: Reply to Arnason: "Multiple sclerosis: additional thoughts.
authors.forename: C M
authors.initials: CM
authors.lastname: Poser
mesh_terms: D001327:Autoimmune Diseases / Q000209:etiology / Q000276:immunology / Q000503:physiopathology*; D001812:Blood-Brain Barrier; D003711:Demyelinating Diseases; D004487:Edema; D006801:Humans; D007249:Inflammation; D008954:Models, Biological; D009103:Multiple Sclerosis / Q000209:etiology / Q000276:immunology / Q000503:physiopathology*; D013119:Spinal Cord Injuries / Q000150:complications; D014611:Vaccination / Q000009:adverse effects