Share this entry
counterstain Line breaks: coun¦ter|stain
Pronunciation: /ˈkaʊntəˌsteɪn/

Definition of counterstain in English:


An additional dye used in a microscopy specimen to produce a contrasting background or to make clearer the distinction between different kinds of tissue.
Example sentences
  • Dapi was used as the chromosome counterstain for fluorescent specimens.
  • The shape of the nucleus was visualized using a DNA counterstain in all experiments.
  • No counterstain was used on the sections, but routine coverslips were applied.


[with object] Back to top  
Treat (a specimen) with a counterstain.
Example sentences
  • After washing in tap water, specimens were briefly counterstained.
  • Background material in the specimen was counterstained dull yellow to red.
  • The chromosomes are counterstained with DAPI (light blue).
Definition of counterstain in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources