Interestingly, IL-1, IL-6, CCL2, and CCL3 expression was reduced, whereas Arg1, IL4Rα, and IL-10 expression were increased in macrophages incubated with exosomes derived from the myocardial infarction group (Figures 2(b) and 2(c)). Here, CCL2 is linked to myocardial infarction.