Biology 546
Human parasitology laboratory tutorial

The photograph on the left is from a human fecal smear. The cyst measured about 55 micrometers in diameter. The patient had moderate diarrhea. What species is represented?

Balantidium coli
Endolimax nana
Entamoeba coli
Entamoeba histolytica

Original; photograph by S. J. Upton

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Kansas State University | Biology Division