| otocyst |
 |
weak |
| regional | Expression is localized to the rostroventrolateral portion of the otocyst. |
| ear |
 |
weak |
| regional | There is weak expression in the otic epithelium. |
| 1st branchial pouch endoderm |
 |
detected |
| regional | FGF-3 is expressed in the endoderm lining the ends of the pharyngeal pouches. |
| 2nd branchial pouch endoderm |
 |
detected |
| regional | FGF-3 is expressed in the endoderm lining the ends of the pharyngeal pouches. |
| 3rd branchial pouch endoderm |
 |
detected |
| regional | FGF-3 is expressed in the endoderm lining the ends of the pharyngeal pouches. |
| acoustic viii ganglion |
 |
weak |
| | Weak expression is detected in the vestibuloacoustic ganglion. |