Ziehl-neelsen staining

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Definition
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Staining method for staining mycobacteria.

General information
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Implementation:

  • Dry and heat fix preparations
  • Cover with carbolic fox solution
  • Heat the slides with a Bunsen flame from below until steam is formed ( do not boil!)
  • let cool down
  • Repeat heating and cooling 2x
  • Rinsing with water
  • Decolorize with HCL alcohol until no more color clouds come off
  • Rinsing with water
  • Counter staining with malachite green 1 min.
  • Rinsing with water

Result: Acid-resistant rods pink to red, other germs and cells green.

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Last updated on: 29.10.2020