Abstract
Interferon production by spleen cells from unimmunized C3H mice challenged in vitro with influenza virus AO/PR8 was investigated. Glass-nonadherent cells (lymphocytes) produced significant levels of interferon, although cocultivation of glass-adherent macrophages was needed for optimal production. Treatment of the cells with antithymocyte serum and complement markedly reduced the interferon production. When glass-nonadherent cells were fractionated on a nylon wool column, the T-cell-enriched fraction consistently produced more interferon than the B-cell-enriched fraction. It is concluded that T cells are an important producer of interferon in spleen cell cultures from normal mice upon challenge with influenza virus, although non-T cells (macrophages and B cells) also may produce interferon under suitable conditions.
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