CD68 and myocardial infarction: To determine whether early moderate exercise has beneficial effects on the inflammatory response in MI, we assessed the characteristics of inflammatory cells, including pro‐inflammatory cells, namely CD45+ leucocytes and CD68+ macrophages (M1 macrophages), and anti‐inflammatory cells, namely CD206+ macrophages and CD163+ macrophages (M2 macrophages), in the infarct zone.