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Clin Immunol. 2006 Jan;118(1):1-10. Epub 2005 Dec 5.

Natural killer cells in human health and disease.

Author information

1
University of Pennsylvania School of Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Division of Allergy and Immunology, 3615 Civic Center Blvd., Philadelphia, PA 19104, USA. Orange@mail.med.upenn.edu

Abstract

Natural killer (NK) cells are lymphocytes of the innate immune system that are critical in host defense and immune regulation. They are activated or inhibited through the ligation of germline-encoded receptors and are involved in mediating cytotoxicity, in producing cytokines and in providing co-stimulation to cells of the adaptive immune system. NK cells play important roles in viral infections, autoimmunity, pregnancy, cancer and bone marrow transplantation. This review highlights recent developments in the understanding of the role of human NK cells in health and disease.

PMID:
16337194
DOI:
10.1016/j.clim.2005.10.011
[Indexed for MEDLINE]

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