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EncyclopediaSeeBalantidiasisBalantidium coli
Ba·lan·ti·di·um co·'lia very large parasitic ciliate species, usually 50-80 mcm in length, reaching up to 200 mcm in pigs, found in the cecum or large intestine, swimming actively in the lumen; usually harmless in humans but may invade and ulcerate the intestinal wall, producing a colitis resembling amebic dysentery.Ba·lan·ti·di·um co·li (bal-an-tid'ē-ŭm kō'lī) A very large parasitic ciliate species, usually 50-80 mcm in length (to 200 mcm in pigs) found in the cecum or large intestine, swimming actively in the lumen; usually harmless in humans but may invade and ulcerate the intestinal wall, producing a colitis resembling amebic dysentery.  BALANTIDIUM COLI CYST: (×400)Balantidium coliA normal parasite of swine and the largest protozoan parasite of humans. It causes balantidiasis. See: illustrationSee also: Balantidium |