Histological Staining Techniques · Histology

Which structure is most prominently highlighted by PAS staining in kidney tissue?

  1. Glomerular basement membrane
  2. Renal interstitial collagen
  3. Vascular smooth muscle fibers
  4. Distal tubular cell nuclei
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Correct answer: Glomerular basement membrane

PAS stain highlights carbohydrate-rich structures such as basement membranes. In kidney tissue, the glomerular basement membrane appears strongly magenta.

Difficulty: Medium Question 17 of 20

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