The following organism was found in the fecal sample of a patient with diarrhea and elevated liver enzymes.This organism is most likely:

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The size of the organism ranges from 10 to 50 mm, averaging 15 to 25 mm.The organism is refractile, and the characteristic "bull's-eye" nucleus, consisting of a small central karyosome.Even, fine peripheral chromatin may be only slightly visible.The average size of the E.histolytica cyst is 10 to 20 mm and may have one to four nuclei each with a small central karyosome and fine, evenly distributed peripheral chromatin.CDC PHIL #607

The Following Organism Was Found in the Fecal Sample of a Patient