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

Entamoeba polecki cysts have one nucleus, or rarely two nuclei, with a small, usually eccentric karyosome (which can also be rather pleomorphic).  Their cytoplasm contains small inclusions and an "inclusion mass", which stains monchromatic grayish-purple or green in trichrome.  The cysts measure usually 11 to 15 µm (range 9 to 18 µm) and their shape varies from spherical to oval.

A	B

A, B: E. polecki cysts stained with trichrome.  Note the large number of red chromatoid bodies; these may be variable in shape.

C	D

E	F

C, D, E, F: E. polecki cysts stained with trichrome.