future hindbrain neural ectoderm |
 |
strong |
| regional | Restricted to rhombomeres 1, 2, 4 and 6 |
trunk somite |
 |
detected |
| regional | Declining expression towards posterior. |
primitive streak |
 |
weak |
| regional | Declining expression and no expression by 10 somite stage. |
head somite |
 |
strong |
| regional | |
anterior pro-rhombomere |
 |
strong |
| | Expressed in r1/2 neurectoderm |
head paraxial mesenchyme |
 |
weak |
| regional | Expression in cranial paraxial mesoderm |