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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Piroplasmida ： ウィキペディア英語版 Piroplasmida Piroplasms (order Piroplasmida) are protozoan parasites of the phylum Apicomplexa.〔(Definition: piroplasmida from Online Medical Dictionary )〕〔(Flora and Fauna of the British Isles )〕 They divide by binary fission and as sporozoan parasites they possess sexual and asexual phases (sexual reproduction occurs in the tick gut). They include the tick parasites ''Babesia'' and ''Theileria''.〔(Definition: Theileriidae from Online Medical Dictionary )〕〔(Theleriosis: The causal organism and life cycle )〕 ==Description== They are minute rounded or pyriform parasites found within erythrocytes, or other circulating or endothelial cells of vertebrates, where they reproduce by merogony. The trophozoite stage is separated from erythrocyte by a single membrane. This distinguishes them from other blood parasites that usually have at least two membranes. An apical complex with a polar ring and rhopteries occurs, but without a conoid and usually without associated pellicular microtubules. They lack flagella and do not form either oocysts or spores. The known vectors are ticks or leeches in which they undergo sporogony; sexual reproduction probably occurs in the vector. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Piroplasmida」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.