Which staining method is used to detect fungal elements?

Which staining method is used to detect fungal elements?

• A. PAS stain
• B. Edema
• C. Biopsy
• D. HIPAA

Answer: (A)

Periodic acid-Schiff staining is used to detect fungal elements because it reacts with carbohydrates in fungal cell walls, turning them a distinct magenta color in tissue sections. This makes fungal structures stand out clearly against the surrounding tissue, especially in formalin-fixed, paraffin-embedded specimens. While there are other fungal stains like Gomori methenamine silver, PAS is a common and reliable choice for highlighting fungi. The remaining options aren’t staining methods: edema is fluid buildup, biopsy is a tissue sampling procedure, and HIPAA is a privacy regulation.

Periodic acid-Schiff staining is used to detect fungal elements because it reacts with carbohydrates in fungal cell walls, turning them a distinct magenta color in tissue sections. This makes fungal structures stand out clearly against the surrounding tissue, especially in formalin-fixed, paraffin-embedded specimens. While there are other fungal stains like Gomori methenamine silver, PAS is a common and reliable choice for highlighting fungi. The remaining options aren’t staining methods: edema is fluid buildup, biopsy is a tissue sampling procedure, and HIPAA is a privacy regulation.