balantidium การใช้

Some ciliates parasitize animals, although only one species, " Balantidium coli ", is known to cause disease in humans.
Infection occurs when the cysts are ingested, usually through contaminated food or water . " Balantidium " infection in immunocompetent individuals is not unheard of, but it rarely causes serious disease of the gastrointestinal tract.
However, other parasitic or symbiotic unicellular organisms were included too in protozoan groups outside Sporozoa ( Flagellata, Ciliophora and Sarcodina ), if they had flagella ( e . g ., many Kinetoplastida, Retortamonadida, Diplomonadida, Trichomonadida, Hypermastigida ), cilia ( e . g ., " Balantidium " ) or pseudopods ( e . g ., " Entamoeba, Acanthamoeba, Naegleria " ).