BRG1 expression is positively correlated to the expression of MMP2 and MMP9 in aortic SMCs of TAD specimens. (A) Representative images of immunohistochemical staining for MMP-2 and MMP-9 in aortic media of TAD and normal tissues. Expression level of MMP-2 and MMP-9 protein was significantly higher in TAD than in normal. Bars =50 μm. (B, C) Dot plots represent log10MMP-2 expression (B) and log10MMP-9 expression (C) against log10BRG1 protein expression level. The lines represent approximated curves. The correlation coefficient (r) and the P value indicate the statistical significance of the negative correlation between the x and y variables.