view of a section through a hydatid cyst of Echinococcus granulosus.  This is an endogenous cyst because the daughter cysts (the encircled body) "bud" into the center of the fluid-filled cyst.  This is a very small portion of the cyst which may become quite large.  The host tissue can be seen at the bottom of the image.  Each of the smaller bodies in the enclosed circle are scolices and will develop into diminutive tapeworms should this be eaten by a definitive or final host such as a canine.  100x

enlarged view of a few scolices within a daughter cyst of the parent hydatid cyst of E. granulosus.   This section includes the rostellar hooks of one of the scolices.  400x