Abstract
Natural killer (NK) cells are lymphoid-derived cellular components of the innate immune system. These cells are part of the first line of defense that function to contain viral infections as well as the spread of tumor cells. The measurement of NK cell activity has recently become a critical assay used to identify potentially immunotoxic chemicals. Characteristics NK cells are derived from the bone marrow and comprise approximately 5-15 % of human peripheral blood lymphocytes (Janeway et al. 2001). They lack surface expression of antigen-specific receptors, as well as many of the surface molecules such as CD3, CD4, CD8, or CD19, that are typically found on B and T lymphocytes. NK cells contain large cytoplasmic granules that aid in the killing of pathogen-infected cells, tumor cells, and major histocompatibility complex (MHC) class 1 disparate cells. However, recognition and killing of target cells by NK cells is intricately regulated by a combination of….
| Original language | English |
|---|---|
| Title of host publication | Encyclopedia of Immunotoxicology |
| Subtitle of host publication | Second Edition |
| Publisher | Springer Berlin Heidelberg |
| Pages | 654-656 |
| Number of pages | 3 |
| ISBN (Electronic) | 9783642545962 |
| ISBN (Print) | 9783642545955 |
| DOIs | |
| State | Published - Jan 1 2015 |
Keywords
- NK cells