| negative selection |
Selection of individuals that do not possess a certain character. A method by which growing cells that do not carry a DNA insert integrated at a specific chromosomal location are selected. See positive selection.
출처: www.fao.org/docrep/003/X3910E/X3910E17.htm
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| negative stain |
A procedure in which the background is stained whereas the specimen is not.
출처: www.pestmanagement.co.uk/lib/glossary/glossary_n.s...
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| negative study |
A term used to refer to a study that does not have "statistically significant" (positive) results indicating a beneficial effect of the intervention being studied. ...
출처: www.sahealthinfo.org/evidence/m-n.htm
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| negative s. |
a scotoma appearing as a blank spot in the visual field; the patient is unaware of it, and it is detected only by examination.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| negative selection |
The process by which immature T lymphocytes (thymocytes) with receptors for self-antigens are destroyed in the thymus. This is part of the mechanism that prevents autoimmune diseases. SEE: autoimmunity.
출처:
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