Natural Killer Cells: Key Players in Autoimmune Diseases NK cells are identified by the presence of surface receptors that allow them to recognize cells that are under stress or have been infected with a virus. These receptors include killer cell immunoglobulin-like receptors (KIRs), natural cytotoxicity receptors (NCRs), and NKG2D. Once an NK cell has identified a target cell, it can kill it through several mechanisms, including the release of...
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