Dimensions and properties of synaptic filaments by type
| Docking | Bridge | Cluster | |
|---|---|---|---|
| Filament population | 15%a | 62%a | 23%a |
| Contact the AZ | 100%b | 0%b | 15%b |
| Number of vesicle contacts (range) | 1 (1–2) | 2 (2–4) | 3 (1–8) |
| Filament length (range) (nm) | 22 (10–47) | 30 (11–78) | 74 (30–169) |
| Filament diameter (range) (nm) | 5 (3–8) | 8 (5–16) | 5 (2–9) |