Which special stain is most useful for demonstrating fungal hyphae in tissue sections?
Correct answer: A. Grocott methenamine silver
- A. Grocott methenamine silver
- B. Ziehl-Neelsen stain
- C. Wright-Giemsa stain
- D. Alcian blue stain
Explanation
Grocott methenamine silver strongly outlines fungal walls and makes hyphae readily visible. Ziehl-Neelsen is mainly used for acid-fast bacteria, while Wright-Giemsa is used chiefly for blood and cellular morphology.
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Covers the causes and mechanisms of disease, cellular injury, inflammation, healing, circulatory disturbances, neoplasia and disorders of major organs. It also includes gross and microscopic pathological changes, specimen interpretation and the distinction between aetiology, pathogenesis, clinical signs and lesions.
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