Biology 546
Human parasitology laboratory tutorial

The photograph on the left is an iron haematoxylin stained amoeba trophozoite from a fecal smear. The patient had periodic bouts of diarrhea, abdominal cramping, and some blood in the stool. The parasite measures about 25 micrometers in length. What species is represented?

Endolimax nana
Entamoeba coli
Entamoeba histolytica
Iodamoeba buetschlii

Original; photograph by S.J. Upton


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