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counterstain

counterstain

1 9.2
A second dye used under a microscope to show parts the first dye misses
  • noun
  • /ˈkaʊntərˌsteɪn/
  • Specialized
: contracolorante
  • Using a counterstain can reveal additional structures not shown by the main stain.

Examples

  • The scientist applied a counterstain to make the cell walls visible under the microscope.

  • After the primary stain, a counterstain helped differentiate the bacterial types.

  • The counterstain helps to reveal the cell structure.

  • A counterstain is often applied after the main stain.

  • In the microscopy lab, researchers applied a pink counterstain to highlight the bacteria in the sample.

  • The scientist added a green counterstain to the slides so that the structures could be easily observed under the microscope.

  • After using the primary stain, a blue counterstain was applied to differentiate the cells in the tissue section.

Synonyms

stain
vscounterstain
  • Specialized
3 6.5

A dye used to make parts of a sample visible under a microscope

is specifically used as a contrasting second dye to reveal unseen structures
fluorochrome
vscounterstain
  • Specialized
1 9.8

A chemical that glows under a microscope to stain cells

uses light emission rather than contrasting colour to show different structures
safranin
vscounterstain
  • Specialized
9.9

A red dye used to color cells or tissue for viewing under a microscope

is applied as a contrasting second dye to highlight structures missed by the main dye
pheno-safranine
vscounterstain
  • Specialized
9.9

A purplish-red dye used to color cells on microscope slides

is used as a contrasting second dye to make different structures stand out
thionin
vscounterstain
  • Specialized
9.9

A purple dye used to stain cells or tissue for viewing under a microscope

is applied as a contrasting second dye to reveal features not seen before

How Contrasting

counterstain
  • Specialized
1 9.2
faint
157 2.7

Surface Forms

counterstain singular
counterstains plural

Morphology

counterstain = stain (transparent) = counter + stain

The productive prefix 'counter-' meaning 'opposite/against' combines with 'stain' to denote a stain used as a contrasting or opposing stain, so learners knowing both parts can infer the meaning.

Etymology

Counterstain comes from counter ('against' or 'opposite') and stain ('a mark of color'). A counterstain is a second color put against the main stain so parts that did not show before stand out under the microscope, so the name tells you exactly what it does.