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counterstain

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
coun·ter·stain  (kountr-stn)
n.
A stain of a contrasting color used to color the components in a microscopic specimen that are not made visible by the principal stain.
tr.v. coun·ter·stained, coun·ter·stain·ing, coun·ter·stains
To color (a microscopic specimen) with such a stain.

counterstain [ˈkaʊntəˌsteɪn]
vb Microscopy
1. (Life Sciences & Allied Applications / Biology) to apply two or more stains in sequence to (a specimen to be examined), each of which colours a different tissue
2. (Life Sciences & Allied Applications / Biology) (tr; usually passive) to apply (one of a series of stains) to a specimen to be examined haematoxylin is counterstained with eosin
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.counterstain - a stain of contrasting color that is used when the principal stain does not show the structure clearly
stain - (microscopy) a dye or other coloring material that is used in microscopy to make structures visible


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24,25,27,28 The nonbound probe is then removed by washing, a nuclear counterstain that weakly fluoresces is added so that the nucleus can be identified, and an antifade is added to retard fluorophore photobleaching.
Karyotype The use of propidium iodide as a counterstain allowed the visualization and identification of chromosome pairs (Fig.
Both can be visualized well against the blue-black nigrosin counterstain (see Figure 3).
 
 
 
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