Movie 3

After injury, macrophage-lineage cells rapidly migrate towards the site of brain injury. The movie shows maximum intensity projections of z-stacks of the optic tectum in an injured mpeg1:GFP animal, revealing rapid directional movement of macrophage-lineage cells towards the lesion site after brain injury. The traces indicate cell body displacement of individual cells in the 140 min following injury. Scale bar, 40 μm.