telencephalon |
 |
strong |
| | Expression was strongest in the developmentally youngest part (of the brain), the telencephalon. |
future spinal cord |
 |
weak |
| | Fzd9 expression in the neural tube had decreased (compared to earlier stages), but was still clearly detectable in ISHs of whole-mount embryos. In the spinal cord anlagen of TS17 embryos, expression was strongest in the more caudal, developmentally younger regions and was already expressed in the neural anlagen of the tail bud. |
diencephalon |
 |
moderate |
| regional | Signal was slightly enhanced in the rostral half of the diencephalon. |
midbrain |
 |
moderate |
| regional | Signal was slightly enhanced in the rostral mesencephalon (midbrain) delineating the border toward the diencephalon. |
tail future spinal cord |
 |
detected |
| | In the spinal cord anlagen of TS17 embryos, expression was strongest in the more caudal, developmentally younger regions and was already expressed in the neural anlagen of the tail bud. |
tail somite |
 |
not detected |
| homogeneous | At TS17, weak Fzd9 expression was seen as segmental stripes in the mature, rostral somite derivatives, whereas the younger somitic mesoderm caudal to the hindlimb bud did not express the gene. |
trunk somite |
 |
weak |
| regional | At TS17, weak Fzd9 expression was seen as segmental stripes in the mature, rostral somite derivatives, whereas the younger somitic mesoderm caudal to the hindlimb bud did not express the gene. |
1st branchial arch maxillary component |
 |
detected |
| | Fzd9 expression was first detected at TS17 in restricted areas of the nose, the maxillar, mandibular and second branchial arch anlagen. |
1st branchial arch mandibular component |
 |
detected |
| | Fzd9 expression was first detected at TS17 in restricted areas of the nose, the maxillar, mandibular and second branchial arch anlagen. |
2nd branchial arch |
 |
detected |
| | Fzd9 expression was first detected at TS17 in restricted areas of the nose, the maxillar, mandibular and second branchial arch anlagen. |
nose |
 |
detected |
| | Fzd9 expression was first detected at TS17 in restricted areas of the nose. |