Oligoclonal immunoglobulins and plasma cells in spinal fluid of patients with multiple sclerosis.

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Abstract
A new modification of polyacrylamide gel electrophoresis (PAGE) was applied to cerebrospinal fluid proteins from patients with multiple sclerosis (MS). The same spinal fluids were also examined by a cytological technique. Over 90% of patients with clinically definite or early probable or latent MS showed abnormal PAGE patterns in the form of oligoclonal gammaglobulin bands. Reactive (atypical, large) lymphocytes or typical plasma cells were found in some patients. In all such cases an oligoclonal pattern was present. The findings of oligoclonal bands provides valuable supporting evidence for the diagnosis of MS in the less definite clinical categories.