| echinostoma | A genus of intestinal flukes of the family echinostomatidae which consists of many species. They occur in man and other vertebrates. The intermediate hosts are frequently mollusks. (12 Dec 1998) |
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| echinostomatidae | A family of flukes (trematoda) characterised by a collar of spines at their anterior end. The body is elongated and is covered with spines, and the two suckers are usually close together. (noble et al., parasitology: the biology of animal parasites, 6th ed, p183) (12 Dec 1998) |