Ultrastructure of the digestive tract of Echinostoma revolutum cercaria.
The digestive tract of a fully formed free-swimming cercaria of Echinostoma revolutum (Froelich, 1802) Dietz, 1909 was studied by electron microscopy. The oral sucker and pharynx are covered by a tegument. The oesophagus and the caeca are not luminized. They are packed with giant epithelial cells with electron-dense granules of irregular shape, rough endoplasmic reticulum and its cisterns, and Golgi apparatus. The tegument of the oral sucker cavity contains numerous uniciliate receptors.
Institute of Parasitology, Czechoslovak Academy of Sciences, Ceské Budĕjovice.
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D000818:Animals; D004064:Digestive System / Q000648:ultrastructure; D004449:Echinostoma / Q000648:ultrastructure*; D008854:Microscopy, Electron; D012908:Snails