Entamoeba histolytica: The agent of amebic dysentery, a disorder with inflammation of the intestine and ulceration of the colon. Entamoeba histolytica is a single-celled parasite that is transmitted to humans via contaminated water and food. It can also infect the liver and other organs.
Quick GuideDigestive Disorders: Common Misconceptions
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Last Editorial Review: 8/28/2013