| telencephalon |
 |
not detected |
| | No expression in the medial wall of the telencephalon. |
| diencephalon |
 |
detected |
| regional | Expression at the dorsal midline of the diencephalon and midbrain. |
| midbrain |
 |
detected |
| regional | Expression at the dorsal midline of the diencephalon and midbrain. |
| optic cup |
 |
strong |
| regional | Sites of strong expression include the dorsal midline of neural tube (does not continue caudal to isthmus), optic cup, and otic vesicle (pigmented epithelium of the retina). |
| brain |
 |
strong |
| regional | Sites of strong expression include the dorsal midline of neural tube (does not continue caudal to isthmus), optic cup, and otic vesicle (pigmented epithelium of the retina). |
| otocyst |
 |
strong |
| regional | Sites of strong expression include the dorsal midline of neural tube (does not continue caudal to isthmus), optic cup, and otic vesicle (pigmented epithelium of the retina). |