Abstract
We studied repeated cerebrospinal fluids of patients with Devic’s neuromyelitis optica (NMO) and multiple sclerosis (MS). Variations of oligoclonal bands (OBs) had opposite trends in the two groups. In MS, O Bs were detected in 399 of 411 patients (97%) and never disappeared. In NMO, O Bs were detected in three of 11 patients (27%) and always disappeared. The hypothesis that NMO and MS follow distinct patho genetic pathways is supported by our findings, which can be useful for the differentiatio n of NMO from MS.
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