Summary
Soleus (SOL) muscles were grafted into extensor digitorum longus (EDL) muscle beds (EDL-first-graft). Sixty days later, some mature EDL-first-grafts were regrafted into their own beds (EDL-second-grafts). Fully regenerated muscle fibers and satellite cells were observed in both types of mature grafts. The ratios of satellite cell nuclei per total nuclei (myonuclei and satellite cell nuclei) were 4.81±0.47% for EDL-2nd graft, 4.26±0.51% for EDL-1st-graft, 4.30±0.33% for control SOL, and 3.30±0.18% for control EDL. It is thought that satellite cells are required for the repeated activity of muscle fiber regeneration. The persistance of satellite cells in EDL-second-grafts suggests that satellite cells are not depleted during the first grafting, making second-grafts possible.
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Mong, F.S.F. Satellite cells in the regenerated and regrafted skeletal muscles of rats. Experientia 44, 601–603 (1988). https://doi.org/10.1007/BF01953309
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DOI: https://doi.org/10.1007/BF01953309