Video 1. Hindbrain V2a neurons with descending projections.

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DOI: 10.7554/eLife.42135.006

A series of horizontal slices showing hindbrain V2a neurons with descending processes (magenta). These neurons were labeled by photoconversion of Kaede in the rostral spinal cord (muscle segments 5–7) at 108 hpf. The confocal stack was acquired at five dpf and then registered to Zebrafish Brain Browser (ZBB) atlas. Key cell groups are highlighted as the horizontal slice moves from dorsal to ventral. Magenta, photoconverted Kaede; green, unconverted Kaede; gray, brain structure volume. Magenta, photoconverted Kaede; green, unconverted Kaede; gray, brain structure volume. Rostral to the left.