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Encephalitozoon cuniculi
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Encephalitozoon cuniculi : ウィキペディア英語版
Encephalitozoon cuniculi

''Encephalitozoon cuniculi'' is a eukaryotic organism belonging to the phylum Microsporidia, in the kingdom Fungi.〔 An obligate intracellular parasite, ''E. cuniculi'' occurs in laboratory mice and rabbits, monkeys, dogs, rats, birds, guinea pigs, and other mammals including humans.〔 At various early times it was thought it was the cause of rabies and polio. This parasite may be transmitted in body exudates or transplacentally. Although damages are minimal, an infection can be fatal, especially in immunocompromised individuals such as AIDS patients.〔
==Life cycle==
The infective form of microsporidia (''E. cuniculi'') is a resistant spore which can survive for a long time in the environment. The spore extrudes its polar tubule and infects the host cell. The spore injects the infective sporoplasm into the eukaryotic host cell through the polar tubule. Inside the cell, the sporoplasm undergoes extensive multiplication. This multiplication occurs either by merogony (binary fission) or schizogony (multiple fission). Microsporidia develop by sporogony to mature spores in the cytoplasm or inside parasitophorous vacule. During sporogony, a thick wall is formed around the spore. The thick wall formed provides resistance to adverse environmental conditions. Once the spores increase in number and completely fill the cytoplasm of the host's cell, the cell membrane is disrupted and releases the spores to the surroundings. These free mature spores can infect new cells thus continuing the cycle.

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「Encephalitozoon cuniculi」の詳細全文を読む



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