Definition of "immunosuppressor" []

• An immunosuppressive agent. (noun)

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• "Likewise, how many effects could follow the simple histamine release by NGF activated mast cells, considering the well-established role of this amine as an immunomodulator or an immunosuppressor?"
• "But high doses block inflammation by increasing expression of the enzyme indoleamine 2,3 dioxygenase, or IDO, an immunosuppressor, the researchers say."