From: Dynamics of muscle fibre growth during postnatal mouse development
Age (days) | P3 | P7 | P14 | P21 | P56 |
---|---|---|---|---|---|
Myofibre length (μm) | 1104.5 ±43.8 (20) | 2688.6* ±66.0 (31) | 3663.0* ±57.8 (36) | 4069.8* ±70.7 (42) | 4977.8* ±83.9 (31) |
Sarcomere length (μm) | - | 2.16 ±0.08 (764) | - | 2.15 ±0.07 (947) | 2.16 ±0.07 (969) |
Myonuclei per myofibre | 51.9 ±1.4 (71) | 102.8* ±2.0 (61) | 206.7* ±2.4 (204) | 244.5* ±3.5 (111) | 256.1 ±4.7 (78) |
Myonuclei per Unit length(100 μm) | 4.7 | 3.7 | 5.6 | 6 | 5.1 |
Satellite cells per myofibre | - | 14.3 ±0.7 (61) | 9.4* ±0.4 (204) | 4.5* ±0.3 (111) | 5.8 ±0.3 (78) |