L-O Number of myonuclei / fiber and of Pax7pos (red) MuSCs (red arrows) on myofibers isolated from flexor digitorum brevis muscle. Nuclei were stained using DAPI (blue). Scale bar in L indicates 50 µm for L and M. (N) The number of myonuclei / isolated fiber is increased in linc-MYH KO compared to WT myofibers (n = 4 KO/4 WT, > 26 fibers/animal; Mann-Whitney test two-tailed, * p < 0.05). (O) Number of MuSCs on isolated fibers from linc-MYH KO and WT mice (n = 4 KO/4 WT animals, Mann-Whitney test two-tailed; ****p < 0.0001). Data are mean ± S.E.M. 