Fig. 7
![Fig. 7](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12872-015-0038-9/MediaObjects/12872_2015_38_Fig7_HTML.gif)
The expression levels of ROCK2 (left panel, A), ROCK1 (middle panel, B) and cleaved caspase-3 (right panel, C) in the left atrial tissue extracts were determined by Western blotting in the normal human adult left atrial tissue samples (n = 3), mitral regurgitation patients with sinus rhythm (n = 4: small number due to lack of enough tissue samples), and mitral regurgitation patients with atrial fibrillation (AF) (n = 6).