Table 1.
X-ray analyses of the axial skeleton of 18 adult mice without an external phenotype from Tg(msd/Dll1)Ieg lines.
| number of vertebrae | vertebral fusions | reduced vertebrae | ||||||||||||
| cv | th | lu | sa | ta | cv | th | lu | sa | ta | cv | th | lu | sa | ta |
| 7 | 13 | 6 | 4 | >25 | - | - | 5–6 | - | - | - | - | - | - | 2–4 |
| 7 | 12 | 7 | 4 | >25 | - | - | 3–6 | 4+ | +1–4 | - | 11–12 | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | 2–3 |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 12 | 7 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | 13+ | +1; 5–6 | - | - | - | - | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 12 | 7 | 5 | >25 | - | - | 1–2; 4–5 | - | - | - | 11–12 | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 14 | 5 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | 3–4 | - | - | - | - | - | - | 2–4 |
| 7 | 12 | 7 | 4 | >25 | - | - | 4–7 | - | - | - | 10–12 | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | 2–4 | - | - | - | - | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | 4+ | +1 | - | - | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | 11–14 | - | - | - |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
| 7 | 12 | 7 | 4 | >25 | 12+ | +1 | 4+ | +1 | - | - | - | - | - | |
| 7 | 13 | 6 | 4 | >25 | - | - | - | - | - | - | - | - | - | - |
cv, cervical; lu, lumbar; ta, tail; th, thoracic; sa, sacral
Bold values differ from the wild-type phenotype presented in the bottom row. Numbers with a '+' indicate fusions of vertebral bodies to the next or previous vertebra. "Reduced vertebra" refers to a shortened R/C length of vertebrae.