ciliates...in digestive vacuoles. Predatory ciliates such as Didinium nasutum, Lacrymaria olor, and Dileptus anser apprehend their prey with special structures called extrusomes. Among the various types of extrusomes are the toxicysts, which are found in the oral region and release toxins that paralyze the prey.
protists...bodies are often present, and pigment bodies apart from, or in addition to, chloroplasts are found in some species. In the cortex, just under the pellicle of some protists, extrusible bodies ( extrusomes) of various types ( e.g., trichocysts, haptocysts, toxicysts, and mucocysts) have evolved, with presumably nonhomologous functions, some of which are still unknown. Scales may appear...
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