| outflow tract |
 |
detected |
| regional | Prx1 was expressed in a stream of cells that appeared to transverse the third, fourth and developing sixth branchial arches, entering the aortic sac and outflow tract in a similar fasion to Pax3. |
| branchial arch |
 |
detected |
| regional | Prx1 was expressed in a stream of cells that appeared to transverse the third, fourth and developing sixth branchial arches, entering the aortic sac and outflow tract in a similar fasion to Pax3. |
| 3rd branchial arch |
 |
detected |
| regional | Prx1 was expressed in a stream of cells that appeared to transverse the third, fourth and developing sixth branchial arches, entering the aortic sac and outflow tract in a similar fasion to Pax3. |
| 2nd branchial arch |
 |
detected |
| | |
| 1st branchial arch |
 |
detected |
| | |
| 1st branchial arch maxillary component |
 |
detected |
| | |
| 4th branchial arch |
 |
detected |
| regional | Prx1 was expressed in a stream of cells that appeared to transverse the third, fourth and developing sixth branchial arches, entering the aortic sac and outflow tract in a similar fasion to Pax3. |
| limb |
 |
detected |
| | Prx1 was present in the limb bud. |
| central nervous system |
 |
not detected |
| | Neural tube was negative. |
| trunk somite |
 |
not detected |
| | Somite derivatives were negative. |
| tail somite |
 |
not detected |
| | Somite derivatives were negative. |