ectocyst

1.Under scanning electron microscopy, a polyhedral and scale-like endocyst was covered with thick ectocyst and an ostiole was veiled with operculum at the junction of ectocyst and endocyst.

在扫描式电镜下可以看到，外囊和内囊间的骨状突起相连处，而且可以见到具皱折的囊体。