Monday, October 10, 2016

Answer to Case 417

Answer: Schistosoma haematobium egg containing a live miracidium.

The video in this case nicely shows the movement of the miracidium as it beats its circumferential cilia and retracts its apical papilla. Normally internal "flame" cells (protonephridium) can also been seen moving, but these cannot be appreciated in this video.

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