Morphology

• What is the average size range of Endolimax nana trophozoites?

  = 7 to 10 µm
• How would you describe the motility of E. nana trophozoites?

  Sluggish and nonprogressive
• What is a key feature used to identify E. nana trophozoites?

  Absence of peripheral chromatin
• What is the characteristic appearance of the karyosome in E. nana trophozoites?

   Large and irregularly shaped
• What is commonly found in the cytoplasm of E. nana trophozoites?

   Bacteria
• What is the typical size range of E. nana cysts?

  5 to 12 µm
• How many nuclei are commonly seen in mature E. nana cysts?

  Four
• What is typically absent in the cytoplasm of E. nana cysts?

  Chromatoid bars
• Which of the following is not a characteristic of E. nana cysts?

  = Presence of multiple nuclei
• What can be found in the cytoplasm of young E. nana cysts?

  Diffuse glycogen mass
• What is the shape of E. nana cysts?

  Spherical, ovoid, or ellipsoid
• Which of the following is not a feature of E. nana cysts?

  Spiraling motility