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              

Only ciliate that is pathogenic to human Largest protozoan parasite in human Habitat in human: Large intestine – caecum and colon Normally parasitic in pigs Trophozoites detected in faeces of infected human Diagnostic Features Size: 40-50 mm (range 50-70 µm or more) Shape: oval Longitudinal rows of cilia cover whole body 01 large kidney shaped […]