FV-coFLDys-transduced DMD myoblasts contribute to muscle regeneration after intramuscular transplantation into immunodeficient mdx nude mice. (a–c) Immunostaining of human lamin AC/human spectrin (a, both red), human dystrophin (green, b), and (c) merged image of (a, b). (d, e) Quantification of the number of human spectrin+ fibers, which contained at least one human lamin A/C+ nucleus (S+L); and dystrophin+ fibers in each transplanted muscle. Color images are available online.