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 ?
Dark hematoxylin counterstain obscuring faintly positive diaminobenzidine (DAB) staining.
Immunoperoxidase with hematoxylin counterstain, bar = 200 [micro]m.
Immunohistochemical reaction (IHC) with 3,3'-diaminobenzidine (DAB) chromogen and hematoxylin counterstain.
c, d) Transient receptor potential vanilloid 4 in synovial tissues of normal and knee osteoarthritis groups detected by indirect immunofluorescence (immunohistochemistry, 3, 3'-diaminobenzidine (DAB) as organic reagent, hematoxylin counterstain, x400).
Sections were cut at a 5-pm thickness and stained with Harris's hematoxylin, followed by eosin counterstain.
Zingiber officinale extract solution stained the muscle fibers and cytoplasm yellow and the nuclei deep green within 4 min when it was used as a counterstain for hematoxylin.
A drop of lactophenol blue was added as the counterstain.
DAPI antifade mounting buffer (Invitrogen, Grand Island, NY) was pipetted onto each slide to counterstain the chromosomes (blue) and provide contrast to the probe (green or red) and covered with a 30 mm X 30 mm coverslip.