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出典:Wikipedia
出典:『Wikipedia』 (2011/05/08 20:00 UTC 版)
Polypodium hydriforme is a species of a parasite attacking the eggs of sturgeon and similar fishes (Acipenseridae and Polyodontidae). It is one of few metazoans living inside the cells of other animals. It is also the only known intracellular cnidarian parasite.
Polypodium hydriforme