γ Interferon induced by S. aureus protein A augments natural killing and ADCC

Abstract
It was demonstrated that protein A induced the production of .gamma. interferon (IFN-.gamma.) in nonadherent, T lymphocyte-depleted (E-), Fc receptor-bearing (FcR+) human peripheral blood lympocytes. IFN-.gamma. is apparently a potent stimulator of natural killing and antibody-dependent cell-mediated cytotoxicity activity.