Definition

Verb: * To remove stain from a laboratory specimen, typically to enhance contrast for microscopic examination. This is a technical procedure in histology and cytology.

Usage

This word is used almost exclusively in scientific contexts, particularly in biology, medicine, and laboratory research. It describes a specific step in preparing slides for viewing under a microscope.

Examples

• "After applying the primary dye, you must destain the tissue section to reveal the specific cellular structures."
• "The protocol requires you to destain the bacterial smear with acid-alcohol for exactly 30 seconds."
• "Over-destaining can lead to a loss of important diagnostic details on the slide."

Advanced Usage

• Gram Staining Context: In microbiology, the Gram staining method involves a critical destaining step using a decolorizer (like alcohol or acetone) to differentiate between Gram-positive and Gram-negative bacteria.
  • Example: "Gram-negative cells will destain readily and take up the counterstain."

Variants and Related Words

• Destainer (noun): A chemical solution or apparatus used for the process of destaining.
  • Example: "Place the slide in the destainer for the specified time."
• Destaining (gerund/noun): The process or technique of removing stain.
  • Example: "Proper destaining is crucial for an accurate diagnosis."

Synonyms

• Decolorize
• Decolourize (UK spelling)
• Bleach (in a specific technical sense, though "bleach" is more general and harsh)

Antonyms

• Stain
• Color
• Dye

Verb

1. remove stain from (a laboratory specimen) to enhance contrast