Isotricha sp. ciliate protozoan, coloured scanning electron micrograph (SEM). Isotricha is a genus of ciliate protozoa (suborder Trichostomatina, order Trichostomatida) found in the stomachs of ungulates, and characterized by the presence of an apical cytostome and by dense longitudinal rows of cilia over the entire body surface. Magnification: x800 when printed at 10 centimetres wide.