<unk>  (synonymous with<unk>  intestinalis and<unk>  duodenalis) is a flagellated protozoan parasite that is responsible for the development of<unk> sis.
Giardia lamblia
Entamoeba histolytica
Salmonella bongori
Cryptosporidium hominis
Dientamoeba fragilis
Balantidium coli
Escherichia coli O157:H7
Shigella dysenteriae