Taxonomy: f. Entamoebidae
Animal: Entamoeba histolytica 1 23.jpg
Sites: Gut
Entamoeba histolytica cysts - spherical 10 - 20 microns (average 12 - 15). Mature cyst has 4 nuclei - fine peripheral chromatin, small compact central karyosome and elongate chromatoidal bodies which have blunt or rounded smooth edges in faecal smear stained with PTAH.

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