natural killer (NK) cells

(redirected from natural killer NK cells)

nat·u·ral kill·er (NK) cells

(na'chŭr-ăl kil'ĕr selz)
Large granular lymphocytes that do not express markers of either T- or B-cell lineage. These cells kill target cells using antibody-dependent cell-mediated cytotoxicity. NK cells can also use perforin to kill cells in the absence of antibody. Killing may occur without previous sensitization.
Synonym(s): NK cells.
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