RT Book, Section A1 Trinchieri, Giorgio A1 Childs, Richard W. A1 Lanier, Lewis L. A2 Kaushansky, Kenneth A2 Lichtman, Marshall A. A2 Prchal, Josef T. A2 Levi, Marcel M. A2 Press, Oliver W. A2 Burns, Linda J. A2 Caligiuri, Michael SR Print(0) ID 1121097265 T1 Functions of Natural Killer Cells T2 Williams Hematology, 9e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071833004 LK hemonc.mhmedical.com/content.aspx?aid=1121097265 RD 2024/04/20 AB SUMMARYNatural killer (NK) cells, with a predominant morphology of large granular lymphocytes, represent a lineage of lymphoid cells with constitutive ability to mediate cytotoxicity toward pathologic target cells and secrete cytokines. NK cells participate in the innate resistance to microbial pathogens and malignancies; opposing effects of activating and inhibitory receptors regulate NK cell activity. Malignant expansions of NK cells, either acute or chronic, are rare, but represent well-identified clinical entities.