Histological Staining Techniques · Histology

Which histological stain is commonly used to identify mast cells and cartilage matrix?

  1. Toluidine blue
  2. Hematoxylin
  3. Sudan IV
  4. Masson's trichrome
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Correct answer: Toluidine blue

Toluidine blue is a basic dye that demonstrates metachromasia in tissues. Mast cell granules and cartilage matrix often show a color shift when stained with this dye.

Difficulty: Medium Question 10 of 20

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