Cyst of an E. hartmanni

  • 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.


Cyst of an E. hartmanni  stained with iodine.

Cyst of an E. hartmanni stained with iodine.

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