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counterstain: Meaning and Definition of

coun•ter•stain

Pronunciation: (n.koun'tur-stān"v.koun"tur-stān'), [key]
— Histol. Histol.n.
  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.
—v.t.
  1. to treat (a microscopic specimen) with a counterstain.
—v.i.
  1. to become counterstained; take a counterstain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
counterspy counterstamp
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