Balantidium coli, the sole ciliated protozoan known ... transmission route and the parasite’s potential to exist in both trophozoite and cyst forms underscore its capacity for zoonotic spread.

Balantidium coli is normally found in the lumen of its ... The life cycle of the protozoan comprises four stages: cysts, trophozoite, binary fission, and encystation. The first stage (Cysts ...