- 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
