| effector | A molecule, chemical, or structure that regulates a pathway by increasing or decreasing the pathway's reaction rate. (09 Oct 1997) |
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| effector cell | A terminally differentiated leukocyte that performs one or more specific functions. (05 Mar 2000) |
| T-lymphocytes, suppressor-effector | Subpopulation of CD8+ T-lymphocytes which suppress antibody production or inhibit cellular immune responses. Suppressor-effector cells execute the message received from suppressor-inducer cells (T-lymphocytes, suppressor-inducer). (12 Dec 1998) |
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