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

Cysts of Entamoeba hartmanni are similar to those of E. histolytica but smaller, measuring 5-10 µm.  Mature cysts contain four nuclei that possess a small, discrete centrally-located karyosome and evenly-distributed peripheral chromatin.  Cysts may not be visible in unstained specimens.  The cytoplasm in mature cysts may contain diffuse glycogen and rounded or elongated chromatoid bodies with rounded ends.

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A: Cyst of an E. hartmanni in a wet mount, stained with iodine.