Distinct sites of expression of Ret and the α-receptors*
| Tissues | Ret | GFRα-1 | GFRα-2 | GFRα-3 |
|---|---|---|---|---|
| Hippocampus | ||||
| Subiculum | − | +++ | − | − |
| CA1 | + | ± | − | − |
| CA3 | ++ | − | − | − |
| Septum | ||||
| Lateral | − | +++ | +++ | − |
| Medial | + | − | ± | − |
| Cortex | ||||
| Layer 4 | − | − | +++ | − |
| Layers 5 and 6 | − | − | + | − |
| Superior colliculus | − | ++ | +++ | − |
| BST** | − | ++ | − | − |
| Claustrum | − | +++ | − | − |
| Ventral pallidum | − | +++ | − | − |
| Dorsal endopiriform nucleus | ± | +++ | − | − |
| Habenular nucleus | ± | +++ | ++ | − |
| Whiskerpad | − | +++ | + | − |
*Data from P7 rats. **Bed nucleus of the stria terminalis. +++, ++, +, ±, and − indicate strong, moderate, weak, very weak, and no hybridization signals.