Taxonomy: f. Enteromonadidae
Animal: Enteromonas sp.1 04.jpg
Sites: Gut
Unidentified small flagellate cyst 4 - 10 x 4 - 6 microns in faecal preparation stained with Iodine, oval with 2 nuclei. Because of its small size and difficulty in studying its morphology, identification was difficult but cysts were thought to be E.hominis which is considered to be non-pathogenic and often not recognised so little is known of this organism; it may be more common than is thought. There were a large number in the faeces of this 90 year old female with chronic diarrhoea. No pathogenic organisms or other causes were found to account for her symptoms. E.hominis cysts are elongate or oval with 1 - 4 nuclei, usually 2 unlike E. nana cysts, which it resembles.

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