| 1 | Chordoma is a more common tumor in this location than chondrosarcoma. | |
| 2 | When notochord organization is ceaseless and migratory, fiber annulus also increases. | |
| 3 | As the notochord inside centrum close, notochord cell from centrum migratory to vertebra clearance. | |
| 4 | The notochord is straight and caudal fin structures are beginning to form on the ventral side of the notochord . | |
| 5 | New notochordal cell populations were seen in degenerated discs injected with ESCs. |