DLK1 and muscular dystrophy: DLK1 levels rise in the presence of different myopathies such as muscular dystrophies, and following intense exercise and injuries.33,67, , , –71 These variations in DLK1 expression influence the fate of the satellite cells, toward myogenic differentiation.67,72 Interestingly, a lower percentage of DLK1 positive satellites cells have been detected in individuals who were consuming anabolic substances versus the ones who were regularly training, probably as the result of quick and massive induction of differentiation.42