In the developing scar tissue replacing the myocardial necrosis 4 weeks after induction of myocardial infarction, CCN5 immunoreactivity was observed in endothelial cells of capillaries and other microvessels, mononuclear leukocytes, and spindle-shaped fibroblast-like cells (Fig. 2c–e). Here, CCN5 is linked to myocardial infarction.