˜yÐÄvlog

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counterstain

[ noun koun-ter-steyn; verb koun-ter-steyn ]

noun

  1. a second stain of a different color applied to a microscopic specimen and used to color and contrast those parts not retaining the first stain.

verb (used with object)

  1. to treat (a microscopic specimen) with a counterstain.

verb (used without object)

  1. to become counterstained; take a counterstain.

counterstain

/ ˈ°ì²¹ÊŠ²Ô³Ùəˌ²õ³Ù±ðɪ²Ô /

verb

  1. to apply two or more stains in sequence to (a specimen to be examined), each of which colours a different tissue
  2. tr; usually passive to apply (one of a series of stains) to a specimen to be examined

    haematoxylin is counterstained with eosin

“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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˜yÐÄvlog History and Origins

Origin of counterstain1

First recorded in 1890–95; counter- + stain
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Example Sentences

Examples have not been reviewed.

Counterstain in eosin, 1 per cent. aqueous solution.

From

Counterstain very lightly with aqueous solution of Neutral Red.

From

Counterstain with Kuehne's carbolic methylene-blue for one or two minutes.

From

Counterstain in methylene blue, aqueous solution thirty seconds.

From

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