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Dientamoeba fragilis

Dientamoeba fragilis is a parasite that lives in the large intestine of people. This protozoan parasite produces trophozoites; cysts have not been identified. The intestinal infection may be either asymptomatic or symptomatic.

Image: Binucleate (left) and uninucleate (right) trophozoites of D. fragilis, stained with trichrome. (Credit: DPDx).

  • Page last reviewed: December 17, 2012
  • Page last updated: December 17, 2012
  • Content source:
    • Global Health - Division of Parasitic Diseases and Malaria
    • Notice: Linking to a non-federal site does not constitute an endorsement by HHS, CDC or any of its employees of the sponsors or the information and products presented on the site.
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