counterstain

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Definitions from WordNet

Noun counterstain has 1 sense

counterstain - a stain of contrasting color that is used when the principal stain does not show the structure clearly
--₁ is a kind of stain

Definitions from the Web

Term: Counterstain

Part of Speech: Noun

Sense: A stain used in microscopy to provide contrast to a primary stain, typically used to highlight specific structures or cells.

Usage: The counterstain, often eosin or methylene blue, is applied after the primary stain to visualize the unstained parts of the specimen.

Example Sentence: The counterstain highlighted the cell nuclei, allowing us to observe their distribution patterns under the microscope.

Part of Speech: Verb

Sense: To apply a stain that provides contrast to a primary stain in microscopy.

Usage: The histotechnologist counterstained the tissue sections with eosin, revealing the unstained regions more clearly.

Example Sentence: Before examining the tissue sample, make sure to counterstain it properly for better visualization.