Natural killer cell/Definition

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< Natural killer cell
Revision as of 14:03, 18 January 2010 by imported>Howard C. Berkowitz
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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

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