Additional file 10: Movie 10.

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Slider cells migrating during annelid head regeneration. High-spatial, fine-temporal resolution time-lapse recording of posterior regeneration after head amputation. The specimen was mounted using the slide-and-oil method and imaged using a Zeiss Axioscope 2 compound microscope. This clip shows anterior slider cell migration during anterior regeneration in the annelid worm Pristina leidyi. Notice the slider cell stopping to undergo cell division (mitosis) towards the end of the clip. Alternative link: https://youtu.be/KmCLaghVYaE. (MP4 1.02 mb)