Table 1.
Distribution and types of synapses formed by trkB-labeled terminals in the CA1 region of hippocampus and the dentate gyrus
| Forming asymmetric synapses | Forming symmetric synapses | Total forming synapses | Total number of terminals | |
|---|---|---|---|---|
| CA1 region | ||||
| Alveus | 1 | 4 | 5 | 25 |
| St. oriens | 23 | 5 | 28 | 78 |
| St. pyramidale | 0 | 10 | 10 | 25 |
| St. radiatum | 13 | 1 | 14 | 54 |
| St. lacun-molec. | 5 | 5 | 10 | 30 |
| Total | 52 | 15 | 67 | 212 |
| Dentate gyrus | ||||
| Hilus | 14 | 2 | 16 | 70 |
| St. granulosum | 3 | 1 | 4 | 25 |
| Inner St. moleculare | 10 | 1 | 11 | 58 |
| Total | 27 | 4 | 31 | 153 |
For each lamina, terminals were counted in six single-section 55 × 55 μm fields (see Materials and Methods).