Biology 546
Human parasitology laboratory tutorial

The trophozoite on the left was found in a fecal smear of an asymptomatic individual during a routine fecal examination. It measured 14 micrometers in length. Numerous uninucleate cysts were also present, all of which contained a large vacuole. What species does it represent?

Endolimax nana
Giardia lamblia
Iodamoeba buetschlii
Trichomonas vaginalis

Original; photograph by S.J. Upton

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