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  1. Oxford American Dictionary

    second messenger

    • IPA[səˈkänd]
    • n.
      a substance whose release within a cell is promoted by a hormone and which brings about a response by the cell.

    • noun: second messenger, plural noun: second messengers

    • 更多解釋

    second messenger

    • n.
      a substance whose release within a cell is promoted by a hormone and which brings about a ...

    Oxford Dictionary