Movie 1.

3D rotation of osteoblasts (yellow) and somatosensory axons (magenta) in the caudal fin of a Tg(sp7:EGFP);Tg(p2rx2a>mCherry) adult (25 mm SL) showing an example of a ray bifurcation (upper ray). The close juxtaposition of somatosensory axons and intraray osteoblasts is visible in the reconstructed orthogonal slices. Note that in addition to marking osteoblasts Tg(sp7:EGFP) also labels keratinocytes as previously reported (DeLaurier et al., 2010). Scale bar, 70 μm.