a decreasing trendp > 0.05
Eight weeks after irradiation, there was no difference in its expression compared with the control group (1.38±0.34, n = 8, p > 0.05); MyoD: 1 week after irradiation, there was a decreasing trend of MyoD mRNA expression comparing with the control group, with no statistical significance (0.74±0.25, n = 7, p > 0.05).