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Related Experiment Videos

Staining mast cells for morphometric evaluation on an image analysis system

J S Graham1, M A Bryant, L J Kirkpatrick

  • 1U.S. Army Medical Research Institute of Chemical Defense, Aberdeen Proving Ground, Maryland 21010-5425.

Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission
|May 1, 1994
PubMed
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Unna's stain effectively highlights mast cells in animal skin for morphometric analysis. This method provides clear contrast, enabling accurate measurements with an image analysis system (IAS).

Area of Science:

  • Histology
  • Veterinary Pathology
  • Morphometry

Background:

  • Accurate morphometric analysis of mast cells requires selective histologic staining.
  • Evaluating various stains is crucial for optimizing image analysis system (IAS) applications.
  • Nonhuman primates and guinea pigs are relevant models for dermatologic studies.

Purpose of the Study:

  • To identify the optimal histologic stain for selective mast cell visualization.
  • To assess the efficacy of stains for morphometric analysis using an image analysis system (IAS).
  • To compare staining performance across different animal species.

Main Methods:

  • Histologic staining of skin sections from nonhuman primates and guinea pigs with 12 different stains.
  • Evaluation of staining intensity and background contrast using light microscopy.

Related Experiment Videos

  • Assessment of selected stains (Methylene blue-basic fuchsin, Toluidine blue, Unna's) with an IAS, including interference filters.

    • Main Results:

    • Methylene blue-basic fuchsin and Unna's stain showed superior mast cell granule staining over background in both species.
    • Toluidine blue also performed well in guinea pigs.
    • Unna's stain, enhanced with specific interference filters (500.5-539.5 nm), provided the best contrast for IAS-based morphometric analysis of mast cells.

    Conclusions:

    • Unna's stain is the most effective method for selective mast cell staining in morphometric analysis.
    • The use of interference filters significantly improves the accuracy of IAS measurements by reducing background interference.
    • This optimized staining protocol facilitates precise quantitative analysis of mast cells in veterinary dermatopathology.