Percentage of total initial segments labeled by isoform-specific sodium-channel antibodies
| Age | Nav1.2-positive initial segments (percentage of total) | Nav1.6-positive initial segments (percentage of total) |
|---|---|---|
| P2 | 95.7 (176/184) | 2.6 (7/274) |
| P9 | 99.4 (172/173) | 40.9 (99/242) |
| P14 | 97.3 (181/186) | 80 (132/165) |
| Adult | 92 (92/100) | 95.3 (242/254) |
Initial segments were defined by ankyrin-G immunostaining.