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      • The organism is surrounded by cilia. Balantidium coli has two developmental stages, a trophozoite stage and a cyst stage. In trophozoites, the two nuclei are visible. The macronucleus is long and sausage-shaped, and the spherical micronucleus is nested next to it, often hidden by the macronucleus.
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  2. www.cdc.gov › parasites › balantidiumCDC - Balantidiasis

    Balantidium coli infection is mostly asymptomatic, but people with other serious illnesses can experience persistent diarrhea, abdominal pain, and sometimes a perforated colon. When traveling to endemic tropical countries, Balantidium coli infection can be prevented by following good hygiene practices.

  3. Balantidium coli has two developmental stages, a trophozoite stage and a cyst stage. In trophozoites, the two nuclei are visible. The macronucleus is long and sausage-shaped, and the spherical micronucleus is nested next to it, often hidden by the macronucleus.

  4. Infection usually results from the ingestion of trophozoites or cysts from the feces of infected animals or humans. Transmission may also occur from ingestion of contaminated food or water. Clinical Signs Balantidiasis may cause ulcerative colitis characterized by diarrhea or dysentery, tenesmus, nausea, vomiting, and abdominal pain.

  5. Dec 26, 2016 · Balantidium coli, trophozoites, tissue Balantidium coli can cause invasive intestinal disease in a similar fashion to Entamoeba histolytica: the trophozoites invade through the mucosa and then laterally into the underlying submucosa, resulting in production of flask-shaped ulcers.

  6. The trophozoites reside in the lumen of the large intestine and appendix of humans and animals, where they replicate by binary fission, during which conjugation may occur . Trophozoites undergo encystation to produce infective cysts . Some trophozoites invade the wall of the colon and multiply, causing ulcerative pathology in the colon wall.

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