Biology 546
Human parasitology laboratory tutorial

The photograph on the left is a cyst found in a human fecal smear. It measured about 15 micrometers in length, and contained 4 nuclei. The patient had severe diarrhea, and some blood in the stool. What species is represented?

Endolimax nana
Entamoeba coli
Entamoeba histolytica
Iodamoeba buetschlii

Original; photograph by S. J. Upton

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