Size of motoneurons in μm2 in MuSK null mutant mice (MuSK−/−) and their wild-type littermates
| MuSK+/+(μm2) | MuSK−/− (μm2) | % increase | |
|---|---|---|---|
| Trochlear | 151 ± 4 (50) | 161 ± 4 (81) | +7 |
| Trigeminal motor | 210 ± 4 (105) | 218 ± 4 (100) | +4 |
| Facial | 205 ± 5 (91) | 212 ± 5 (93) | +3 |
| Hypoglossal | 197 ± 5 (85) | 193 ± 5 (106) | −2 |
Motoneurons from three wild-type animals and three MuSK−/− mice were analyzed for each of four cranial nuclei. MuSK+/+ and MuSK−/− values are the average ± SEM. The values in parentheses indicate the number of cells examined. Percentages (%) refer to the increase in the number of motoneurons with respect to the controls (MuSK+/+).