Two weeks after MI, nNOS-KO mice experienced a high death rate (Figure 7(a)), augmented infarction area (Figures 7(b) and 7(c)), increased cardiac hypertrophy (Figures 7(b) and 7(d)), fibrosis (Figures 7(e) and 7(f)), and cell apoptosis (Figures 7(g) and 7(h)). Here, NOS1 is linked to cardiac hypertrophy.