counterstain

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coun·ter·stain

 (koun′tər-stān′)
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
1. (Biology) to apply two or more stains in sequence to (a specimen to be examined), each of which colours a different tissue
2. (Biology) (tr; usually passive) to apply (one of a series of stains) to a specimen to be examined: haematoxylin is counterstained with eosin.

coun•ter•stain

(ˈkaʊn tərˌsteɪn)

n.
1. a second stain applied to a microscopic specimen for contrast.
v.t.
2. to treat (a microscopic specimen) with a counterstain.
v.i.
3. to become counterstained; take a counterstain.
[1890–95]

counterstain


Past participle: counterstained
Gerund: counterstaining

Imperative
counterstain
counterstain
Present
I counterstain
you counterstain
he/she/it counterstains
we counterstain
you counterstain
they counterstain
Preterite
I counterstained
you counterstained
he/she/it counterstained
we counterstained
you counterstained
they counterstained
Present Continuous
I am counterstaining
you are counterstaining
he/she/it is counterstaining
we are counterstaining
you are counterstaining
they are counterstaining
Present Perfect
I have counterstained
you have counterstained
he/she/it has counterstained
we have counterstained
you have counterstained
they have counterstained
Past Continuous
I was counterstaining
you were counterstaining
he/she/it was counterstaining
we were counterstaining
you were counterstaining
they were counterstaining
Past Perfect
I had counterstained
you had counterstained
he/she/it had counterstained
we had counterstained
you had counterstained
they had counterstained
Future
I will counterstain
you will counterstain
he/she/it will counterstain
we will counterstain
you will counterstain
they will counterstain
Future Perfect
I will have counterstained
you will have counterstained
he/she/it will have counterstained
we will have counterstained
you will have counterstained
they will have counterstained
Future Continuous
I will be counterstaining
you will be counterstaining
he/she/it will be counterstaining
we will be counterstaining
you will be counterstaining
they will be counterstaining
Present Perfect Continuous
I have been counterstaining
you have been counterstaining
he/she/it has been counterstaining
we have been counterstaining
you have been counterstaining
they have been counterstaining
Future Perfect Continuous
I will have been counterstaining
you will have been counterstaining
he/she/it will have been counterstaining
we will have been counterstaining
you will have been counterstaining
they will have been counterstaining
Past Perfect Continuous
I had been counterstaining
you had been counterstaining
he/she/it had been counterstaining
we had been counterstaining
you had been counterstaining
they had been counterstaining
Conditional
I would counterstain
you would counterstain
he/she/it would counterstain
we would counterstain
you would counterstain
they would counterstain
Past Conditional
I would have counterstained
you would have counterstained
he/she/it would have counterstained
we would have counterstained
you would have counterstained
they would have counterstained
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
References in periodicals archive ?
These common nucleus counterstains bind to DNA, and emit blue fluorescence under light excitation (Ex/Em ~ 350/460 nm).
Eosin or Mayer's hematoxylin, both from Sigma Diagnostics, were used as counterstains.
Unlike fluorescence in situ hybridization, these technologies use traditional counterstains and generate high-quality cellular morphology, allowing for distinction between different aspects of the specimen, such as invasive and in situ tumor components.