(A) Number of Pax7+ cells in TA section of mdx and mdxθ−/− mice at 6 and 12 weeks, and 6 and 12 months of age. The number of Pax7+ cells was calculated by counting the number of PAX7+ cells per field of view in immune-stained sections. The results are the means ± SD (n = 3/ genotype/ age (* p < 0.05, ** p < 0.01, two-tailed Student’s t-test). (B) Myogenin mRNA levels in WT (n = 2), PKCθ−/− (n = 3), mdx (n = 5) and mdxθ−/− (n = 4) TA muscle from 12 months old mice. The values were normalized vs. GAPDH mRNA level of expression. Statistical significance was determined by a one-way ANOVA using a Tukey’s post-test (* p < 0.05, means ± SD).