Balantidium coli – Cyst

  • Cyst is the infective stage to human
  • Detected in faeces of infected human
Diagnostic Features
  • Size: 50-55 µm (range 45-65 mm)
  • Shape: Large, oval or round shaped
  • Thick walled
  • No cilia and is non motile
  • Kidney shaped macronucleus
  • Contractile vacuoles visible in the cytoplasm

Magnification x4

Magnification x10

Magnification x40

Magnification x100