Analysis of infiltrating CD4 and CD8 T cells in quadriceps of mdx mice. (A) Muscle sections of quadriceps muscles from AAV8-tMCK-A20-treated (AAV8-A20) treated or saline-treated mdx mice were immunolabeled for CD4 and CD8 T cells. Sections were counterstained with eosin to visualize fibers. (B) Quantification of the number of CD4 and CD8 T cells per section of quadriceps muscles from AAV8-tMCK-A20- or saline-treated mdx mice. *p < 0.05. n = 9 for saline-treated mdx mice; n = 12 for AAV8-tMCK-A20-treated mdx mice. Scale bar = 20 µm.