Experimental allergic encephalomyelitis: successful treatment in vivo with a monoclonal antibody that recognizes T helper cells.

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Abstract
Monoclonal antibody W3/25, which recognizes rat T helper cells, was injected i.p. or i.v. into Lewis rats with clinical signs of experimental allergic encephalomyelitis (EAE). This treatment, which was given 12 or 13 days after inducing EAE by the injection of purified myelin basic protein, significantly affected the course of the disease in that treated animals recovered, on the average, in 2 days, whereas control animals exhibited signs of EAE for a minimum of 4 days. Two pan-T cell monoclonal antibodies given in similar dosage failed to affect the course of the disease.