Definition of counterstain in English:

counterstain

Line breaks: coun¦ter|stain
Pronunciation: /ˈkaʊntəˌsteɪn
 
/
Biology

noun

  • An additional dye used in a microscopy specimen to produce a contrasting background or to make clearer the distinction between different kinds of tissue.
    More 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.

verb

[with object] Back to top  
  • Treat (a specimen) with a counterstain.
    More 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).

More definitions of counterstain

Definition of counterstain in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea