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单词 counterstain
释义 counterstain
  n.   /kown"teuhr stayn'/;  v.   /kown'teuhr stayn"/, 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.  
  2. to treat (a microscopic specimen) with a counterstain.
  v.i.  
  3. to become counterstained; take a counterstain.
 [1890-95; COUNTER- + STAIN]
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