Which technique is most suitable for demonstrating a bacterial capsule by light microscopy?
Correct answer: B. India ink preparation
- A. Ziehl-Neelsen staining
- B. India ink preparation
- C. Albert staining
- D. Giemsa staining
Explanation
India ink provides a dark background against which the unstained capsule appears as a clear halo around the bacterial cell. Ziehl-Neelsen detects acid-fast organisms, while Albert and Giemsa stains demonstrate other cellular features.
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Covers the structure, classification, growth and transmission of bacteria, viruses, fungi and other disease causing microorganisms in animals. It explains innate and acquired immunity, antibodies, antigens, vaccination, hypersensitivity and diagnostic methods, while distinguishing infectious agents from the immune responses they produce.
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