title: [What is the cause of low concentration of B12 in cerebrovascular fluid in multiple sclerosis?].
authors.forename: T
authors.initials: T
authors.lastname: Kolesar
mesh_terms: D001812:Blood-Brain Barrier; D006801:Humans; D007166:Immunosuppressive Agents / Q000008:administration & dosage; D009103:Multiple Sclerosis / Q000134:cerebrospinal fluid* / Q000188:drug therapy; D014805:Vitamin B 12 / Q000008:administration & dosage / Q000134:cerebrospinal fluid* / Q000493:pharmacokinetics
chemical_list: D007166:Immunosuppressive Agents; D014805:Vitamin B 12