| natural killer cells |
NK cells belong to the innate immune system and are specialized to kill target cells that are either infected with viruses or host cells that have become cancerous. CD56 is a surface marker specific to NK cells.
출처: www.jco.org/cgi/glossarylookup
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| natural selection |
The differential survival and reproduction of organisms with genetic characteristics that enable them to better utilize environmental resources
출처: www.accessexcellence.org/AE/AEPC/WWC/1994/glossary...
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| natural selection |
The process by which new species evolve when influenced by selective pressure (Martin et al, 2000). Natural selection occurs when the natural factors of environmental resistance tend to eliminate those members of a population that are least well adapted to cope and thus, in effect, select those best adapted for survival and reproduction (Nebel et al, 1998).
출처: www.med.uwo.ca/ecosystemhealth/education/glossary....
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| natural killer cell |
A cell type of the immune system that destroys tumor cells and cells infected with some types of organisms.
출처: www.bioethics.gov/reports/stemcell/glossary.html
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| natural immunity |
Inherited resistance to disease that varies between breeds, strains within breeds and individuals.
출처: www.goatworld.com/articles/terminology.shtml
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