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Cysts of Entamoeba coli are usually spherical but may be elongated and measure 10–35 µm. Mature cysts typically have 8 nuclei but may have as many as 16 or more. Entamoeba coli is the only Entamoeba species found in humans that has more than four nuclei in the cyst stage. The nuclei may be seen in unstained as well as stained specimens.
- Amebiasis
Mature Entamoeba histolytica/Entamoeba dispar cysts have 4...
- Diagnostic Procedures
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- Amebiasis
Aug 23, 2023 · On initial microscopy, the cyst of Entamoeba coli typically has eight nuclei, while Entamoeba histolytica typically has four. The peripheral chromatin is coarse and irregularly clumped for Entamoeba coli and fine, evenly distributed for Entamoeba histolytica.
- Akhlema Haidar, Orlando De Jesus
- 2023/08/23
Aug 23, 2023 · Entamoeba coli is one of many non-pathogenic protozoa found in humans. It is transmitted through fecal-oral contact, and the mature cyst can be found in contaminated water. Typically, these protozoa inhabit the large intestinal tract and can be identified in diagnostic stool specimens. It is essential to differentiate Entamoeba coli, a ...
Aug 23, 2023 · This trichrome-stained photomicrograph depicts a mature Entamoeba coli cyst containing five clearly visible nuclei and what may have been a sixth nucleus, which was outside the focal plane and, therefore, out of focus. The cyst also contained a visible chromatoid body.
Cysts of Entamoeba hartmanni are similar to those of E. histolytica but smaller, measuring 5-10 µm. Mature cysts contain four nuclei that possess a small, discrete centrally-located karyosome and evenly-distributed peripheral chromatin. Cysts may not be visible in unstained specimens.
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Apr 8, 2022 · Two trophozoites have ingested erythrocytes, and all 3 have nuclei with small, centrally located karyosomes. Trichrome stain of Entamoeba histolytica cyst in amebiasis. Each cyst has 4...
