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miracidium |
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miracidium [‚mī·rə′sid·ē·əm] (invertebrate zoology) The ciliated first larva of a digenetic trematode; forms a sporocyst after penetrating intermediate host tissues. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Inside the snail, within several weeks, the miracidium transforms into cercariae. Even the cercariae of schistosomes parasitic to birds and animals will often try to penetrate human skin, causing the conditior. The cercariae penetrate under the scales of a susceptible fish, which serves as the second intermediate host; they encyst as metacercaria, mainly in the fish body muscles. |
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