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Rastrimonas
''Rastrimonas'' is a monotypic genus of parasitic protozoa in the phylum Apicomplexa. It contains the single species ''Rastrimonas subtilis''. It was described in 2002 from the free-living cryptomonad ''Chilomonas paramaecium'' and placed in the new genus ''Cryptophagus''. The following year this was renamed ''Rastrimonas''.
==Life cycle==
The life cycle begins with the adhesion of the anterior tip of the parasite, followed by the penetration of the flagellated sporozoite, into a specialized region at the base of the flagellum of an individual ''Chilomonas''. The trophozoite grows within the host cytoplasm.
After 4 to 5 successive nuclear mitoses the sporozoites bud on the surface where they acquire flagella, micronemes, and other apical structures. Mitosis is closed with an external spindle lacking a paradesmosis.
A sporangium is not formed, but a cyst may occur within the host.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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