Question

Pathogenesis and morphology of entamoeba histolytica

Answer 1

morphology

parasite occurs in three stages

1.trophozoite

2.precyst

3.cyst

pathogenesis ::

1. Mode of infection:

Faeco-oral route

Ingestion of cyst contaminated foods and water

2. Virulence factors:

i. Cyst wall: cyst wall is resistant to low pH and gastric juice of stomach.