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[Endolimax nana] [Entamoeba coli] [Entamoeba gingivalis] [Entamoeba hartmanni] [Entamoeba polecki] [Iodamoeba buetschlii]

Trophozoites of Iodamoeba buetschlii measure 8 to 20 µm and possess a single nucleus with a large, usually central karyosome surrounded by refractile, achromatic granules.  The cytoplasm is coarsely granular, vacuolated and can contain bacteria, yeasts or other materials.  Movement in living trophozoites is sluggish and described as nonprogressive.  The trophozoites of I. buetschlii can be difficult to distinguish from the trophozoites of Endolimax nana.

A	B

A, B: Trophozoites of I. buetschlii trophozoite stained with trichrome.