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Suppression of the in vitro antibody response to sheep erythrocytes by mouse fibroblast interferon occurred by induction of suppressor cell activity in spleen cells. The suppressor cells produced a soluble factor which mediated the immunosuppression. The suppressor factor did not inhibit virus replication; thus, interferon probably regulates the B-cell response by a mechanism that is different from its antiviral effect.
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Johnson et al. (1980) studied this question.
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