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Levamisole causes dose-dependent elevation of serum IFN-γ and suppression of serum IgE. Serum IFN-γ level and (b) serum IgE level by ELISA following treatment of 10 BN rats with levamisole 0·625–25 mg/kg/day intraperitoneally. There was a dose-dependent rise in serum IFN-γ and fall in serum IgE.
