title: Fine structure of the hydatid cyst and protoscolex of Echinococcus granulosus.
mesh_terms: D000818:Animals; D004443:Echinococcosis / Q000473:pathology*; D004446:Echinococcus / Q000033:anatomy & histology*; D008854:Microscopy, Electron; D012756:Sheep; D012757:Sheep Diseases / Q000473:pathology