Consistent with published reports (Yoshida et al., 1998), the majority of the satellite cells in the tumor-free vehicle-treated group were Pax7+/MyoD– (96.29 ± 0.69%) and a small population was found to be Pax7+/MyoD+ (3.71 ± 0.69%) (Figures 3C,D). This evidence concerns the gene PAX7 and neoplasm.