staining (redirected from Histologic staining)

staining /stain·ing/ (stān´ing)

1. artificial coloration of a substance to facilitate examination of tissues, microorganisms, or other cells under the microscope. For various techniques, see under stain.

2. in dentistry, the modification of the color of a tooth or denture base.

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stain·ing (stnng)

n.

1. The act of applying a stain.

2. Modification of the color of the tooth or of the denture base to give a more realistic appearance.

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staining,

n 1. a modification of the color of the teeth or denture base to achieve a more lifelike appearance.
2. amount of stain present on the teeth, either extrinsic or intrinsic in origin. See also stain.

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staining

1. artificial coloration of a substance to facilitate examination of tissues, microorganisms or other cells under the microscope. For various techniques, see under stain.

2. marring the appearance.

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chromosomal staining

blood is collected in a highly aseptic manner and placed in tissue culture medium containing a stimulant to cell division. The leukocytes are collected, killed with a cytotoxic agent, enlarged by osmosis in a hypotonic liquid, placed on slides, fixed and stained.

negative staining

a procedure visualizing specimens by either light or electron microscopy. In light microscopy, India ink which blocks the transmission of light is used as a negative stain to detect bacterial capsules. In electron microscopy, electron-dense salts such as sodium phosphotungstate are used in the examination of particles particularly viruses.

Negatively stained virus particles of infectious bursal disease virus. By permission from Fenner F, Gibbs EPJ, Horzinek MC, Studdert MJ, Murphy FA, Veterinary Virology, Academic Press, 1999

radiograph staining

may be yellow or brown stains due to inadequate rinsing, or doubly refracting exhibiting different colors depending on angle of viewing.