head mesenchyme |
 |
strong |
| regional | Intense staining is observed in the ventral facial mesenchyme adjacent to the maxillary arch. |
2nd branchial arch mesenchyme |
 |
detected |
| | Staining extends into the mesenchyme of the hyoid or second branchial arch. |
1st branchial arch mandibular component mesenchyme |
 |
detected |
| | Staining is observed throughout the mesenchyme of the first arch. |
1st branchial arch maxillary component mesenchyme |
 |
detected |
| | Staining is observed throughout the mesenchyme of the first arch. |
forelimb bud |
 |
detected |
| | By 10.5 dpc, mFrzb-1 begins to lose its strictly ventral expression pattern in the forelimb. |
hindlimb bud |
 |
detected |
| regional | At 10.5 dpc, mFrzb-1 remains ventral in the hindlimb. |