Video 3

Movie S3. Dense clusters of GFP-NPCs in the ventral spinal cord. GFP-NPCs (green) are visualized under 2P excitation 1 wk following transplant into a C57/Bl6 mouse. Shown is a 3D rotation of the GFP-NPC cluster, followed by a time-lapse movie of GFP-NPC proliferation. Movie duration = 25:05 (min:s). (Scale bar, 40–10 μm.)