title: Aetiology: The X factor.
authors.forename: Lauren
authors.initials: L
authors.lastname: Gravitz
mesh_terms: D000818:Animals; D001812:Blood-Brain Barrier / Q000473:pathology; D001921:Brain / Q000473:pathology; D004198:Disease Susceptibility; D006801:Humans; D008875:Middle Aged; D018448:Models, Immunological; D008959:Models, Neurological; D009103:Multiple Sclerosis / Q000209:etiology* / Q000235:genetics / Q000276:immunology / Q000503:physiopathology