India Ink Method for Cryptococcus neoformans
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Questions and Answers

What is the distinctive feature of Cryptococci that makes them visible under the microscope?

  • Their large, opaque capsules
  • Their small, opaque capsules
  • Their small, transparent capsules
  • Their large, transparent capsules (correct)
  • Which method is particularly useful in detecting Cryptococcus neoformans in cerebrospinal fluid (CSF)?

  • India ink preparation (correct)
  • Acid-fast staining
  • Fluorescent staining
  • Gram staining
  • What is mixed with centrifuged CSF to detect Cryptococcus neoformans?

  • India ink (correct)
  • Gram's iodine
  • Sudan III
  • Crystal violet
  • Study Notes

    Cryptococci Characteristics

    • The distinctive feature of Cryptococci is its large polysaccharide capsule, which makes them visible under the microscope.

    Detection of Cryptococcus neoformans

    • India ink stain is particularly useful in detecting Cryptococcus neoformans in cerebrospinal fluid (CSF).
    • Centrifuged CSF is mixed with India ink to detect Cryptococcus neoformans.

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    Description

    Test your knowledge on the India ink method used to detect Cryptococcus neoformans in cerebrospinal fluid (CSF) with this quiz. Learn about the procedure, identifying features, and more.

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