The Structure and Histochemistry of some Trematode Metacercarial Cysts

Abstract
The nature and histochemistry of the metacercarial cyst wall of five species of trematodes of different ecological habitats was investigated. Both structurally and chemically, the cysts of Posthodiplostomum sp. and Posthodiplostomoides leoncnsis are similar. They differ from the metacercarial cysts of Parorchis acanthus, Posthodiplostomum nanum and Clinostomum tilapiae