Giardia lamblia – Cyst

  • Cyst is the infective stage to human
  • Detected in faeces of infected human
Diagnostic Features
  • Size: 11-12 mm (range: 8-19mm) in length
  • Shape: Oval and small
  • Up to 04 nuclei – at least 02 visible; usually located at one end
  • Thread-like remains of flagella, remains of axonemes and parabasal bodies usually visible
  • Cytoplasm often retracts from part of cell wall

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