Classification of neuronal profiles containing MOR immunoreactivity, NK1 immunoreactivity, or both MOR and NK1 in trigeminal dorsal horn
| Receptor | n | Somata | Dendrites | Axons | Axon terminals |
|---|---|---|---|---|---|
| MOR | 695 | 0 (0%)1-a | 311 (45%) | 348 (50%) | 36 (5%) |
| NK1 | 804 | 4 (<1%) | 713 (89%) | 81 (10%) | 6 (<1%) |
| MOR + NK1 | 149 | 1 (1%) | 145 (97%) | 3 (2%) | 0 (0%) |
Each cell in the table indicates numbers of profiles in that category for each antigen. Percentages indicate the breakdown across the table within that antigen group.
↵F1-a MOR somata were occasionally seen by light microscopy but were not observed in these randomly chosen fields.