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Entamoeba histolytica - parasitic amoeba

Image Number: 21063B

Caption:

Entamoeba histolytica - dividing trophozoite with lobopodial extensions. A parasitic amoeba that causes amebic dysentery & ulcers (vegetative trophozoite stage). The amoeba moves by cytoplasmic extrusions / extensions and lobopodia. They invade the intestine but may spread to the liver, lungs and other tissues, causing abscesses to develop. Infection is caused by the ingestion of cysts in contaminated food or water. The cysts develop into the pathogenic trophozoite forms seen here. New cysts are carried out of the body in the feces. Entamoeba histolytica occurs worldwide, with up to 50% of the population being infected with it primarily in warmer climates. Amebic dysentery is spread by fecal contamination of food and water and is most common where sanitation is poor.

Keywords:

| 21063B 01.01.03 amebic dysentery amoeba amoebic dysentery animal disease aquatic colon infection contaminated fresh water dividing division dysentery Entamoeba histolytica eukaryote feces human disease intestine infection parasite parasitic plankton polluted water pollution protozoa protozoal pathogen protozoan zoonoses zoonotic microorganism zooplankton SEM |

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