[Ultrastructural study of posttraumatic regeneration of muscle tissue in adult rats].

Regeneration of muscle fibers in pubertal rats (days 8 and 10 after mechanical trauma) can be followed until the occurrence of muscle tubules, resembling tissue formation during embryogenesis. Apart from the cellular type regeneration, the contractile apparatus recovery was also observed inside the preserved basal-sarcolemmal skirts according to the type of intracellular reparative regeneration.