| natural childbirth |
The natural childbirth technique attempts to minimize medical intervention, particularly anaesthetics, during childbirth. Proponents advocate that anaesthetics may increase the likelihood of complications, because labor may be slowed or the woman may not be able to adequately direct her body to push properly during final delivery. ...
출처: en.wikipedia.org/wiki/Natural_childbirth
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| natural selection |
Natural selection is a process by which biological populations are altered over time, as a result of the propagation of heritable traits that affect the capacity of individual organisms to survive and reproduce. It is one of several mechanisms that give rise to the evolution of biological species (other mechanisms include genetic drift and gene flow. ...
출처: en.wikipedia.org/wiki/Natural_selection
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| National Institute on Aging |
Information Center PO Box 8057 Gaithersburg, MD 20898-8057 800-222-2225 (M - F / 9 - 5 EST)
출처: www.geocities.com/HotSprings/8741/define.html
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| natural killer cell |
NK cell. A type of white blood cell that contains granules with enzymes that can kill tumor cells or microbial cells. Also called a large granular lymphocyte.
출처: www.stjude.org/glossary
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| natural selection |
Evolutionary change based on the differential reproductive success of individuals within a species.
출처: highered.mcgraw-hill.com/sites/0072549238/student_...
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