Histological Staining Techniques · Histology

Which staining technique is commonly used to detect glycogen and other carbohydrates in tissues?

  1. Periodic acid–Schiff (PAS) stain
  2. Ziehl-Neelsen acid-fast stain
  3. Hematoxylin and eosin stain
  4. Wright-Giemsa differential stain
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Correct answer: Periodic acid–Schiff (PAS) stain

The PAS stain detects polysaccharides such as glycogen and mucosubstances in tissues. It produces a bright magenta color in structures containing carbohydrates.

Difficulty: Medium Question 5 of 20

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