Movie 4.

3D rotation of osteoblasts (yellow), axons (magenta), and endothelium (cyan) in the caudal fin of a 5.7 mm SL Tg(fli1a:EGFP);Tg(sp7:mCherry-NTR) fish immunostained for acetylated tubulin. Note the bilaterally symmetric innervation of the bony rays surrounding the inner, sheet-like endothelial plexus. Scale bar, 30 μm.