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Figure 7: Three months after implantation, evaluation of the regenerative capacity of the seeded scaffolds. A hematoxylin and eosin staining revealed a large area of fibrosis in the muscle graft ((a) and (b), sk). However, within the muscle graft despite the area of fibrosis, we detected regenerating myofibers ((b), arrows), and large quantities of dystrophin-positive myofibers ((c), arrows). Within the areas of regeneration, revascularization was detected through the visualization of CD31-positive cells ((d) green/arrows).