Natural killer cell

Natural killer cell [r]: Bone marrow-derived lymphocytes that possess cytotoxic properties, classically directed against transformed and virus-infected cells. Unlike T- and B-lymphocytes, they arenot antigen specific. The cytotoxicity of natural killer cells is determined by the collective signaling of an array of inhibitory and stimulatory cell surface receptors. T8-lymphocytes share some properties of these cells ^[e]

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