Fig. 5.

(A) Representative immunohistochemical images of sympathetic nerve activity at three days post-MI, as indicated by the activation marker of the neurons Fos family (brown), and nuclei (blue) were stained with hematoxylin in a (magnification×100), b (×200), c (×400): the sham + shCtrl group; d (×100), e (×200), f (×400): the MI + shCtrl group; g (×100), h (×200), i (×400): the MI + shTLR4 group. n = 10–11 in each group. The data are expressed as the mean ± S.D. Bar = 50 μm *P < 0.01 versus sham group; @P < 0.05 versus MI + shCtrl group. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)