- Yeast cells: Normally present.
- Bacteria: Normally gram negative are present.
There are pathogenic and non–pathogenic protozoa found in stool.
Non–pathogenic
- Entamoeba coli–cysts or vegetative form.
- Iodamoeba butschili – cysts.
- Endolimax nana – cysts.
- Entamoeba histolytica – cysts or vegetative form.
- Giardia lamblia–cysts.
- Balantidium coli–cysts.
- Giardia lamblia – vegetative form.
They are pathogenic in nature. The different kinds of worms found are:
- Enterobius vermicularis (pinworm).
- Trichuris trichuria (whipworm).
- Ascaris lumbricoides (roundworm).
- Ankylostoma duodenale (hookworm).
- Nectar americanus.
- Strongyloides stercoralis.
They are pathogenic in nature:
- Taenia saginata.
- Taenia solium (tape worms).
- Beef tape worm.
- Pork tape worm.
- Dwarf tape worm.
- Dog tape worm.
They are pathogenic in nature, generally known as fluke:
- Schistosoma hematobium.
- Schistosoma mansoni.
- Schistosoma japonicum.