MYH3 and Ullrich congenital muscular dystrophy: Some TUNEL positive nuclei were observed in the MYH3+ myofibers in the TA muscles of both non-transplanted and transplanted mice at 4 weeks (Figure 5F), possibly reflecting the specific pathology of UCMD muscles, in which new myofibers during regeneration fail to grow and mature, undergoing apoptosis instead (Paco et al., 2012).