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.
   在扫描式电子显微镜下可以看到，外囊和内囊间的骨状突起相连处，而且可以见到厚具皱折的囊体。

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