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CILIATES Balantidium coli only ciliate infecting humans large and diverse group majority are free-living covered with rows of cilia defining characteristic.

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Presentation on theme: "CILIATES Balantidium coli only ciliate infecting humans large and diverse group majority are free-living covered with rows of cilia defining characteristic."— Presentation transcript:

1 CILIATES Balantidium coli only ciliate infecting humans large and diverse group majority are free-living covered with rows of cilia defining characteristic is nuclear dimorphism micronucleus (genetic) macronucleus (somatic) sexual reproduction involving conjugation

2 Ciliate Reproduction

3 Balantidium coliBalantidosis world-wide distribution especially prevalent in tropics rarely exceeds 1% common in pigs and monkeys unlikely to be reservoirs usually non-pathogenic commensal in l. intestine can invade intestinal epithelium and cause ulceration with dysentery- like symptoms aka, balantidiasis, balantidial dysentery symptoms: acute diarrhea with mucus and blood, cramps diagnosis: identify cyst or trophozoite in feces treatment: tetracycline or iodoquinol prevention: same as other fecal-oral diseases

4 Balantidium coli ~55 m ~70 x 45 m (up to 200 m)

5 unstainedtrichromeeosin


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