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Sigma KEE - Leech
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Leech
Leeches are segmented parasitic or predatory Worms that comprise the subclass Hirudinea within the phylum Annelida. The best-known species, such as the medicinal leech, Hirudo medicinalis, are hematophagous, attaching themselves to a host with a sucker and feeding on Blood, having first secreted the peptide hirudin to prevent the blood from Clotting. [from Wikipedia]
Relationships      
Parents 蠕虫 Long, narrow, soft-bodied Invertebrates.


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