MSCs produce a variety of cytokines, such as vascular growth factor (VEGF), basic fibroblast growth factor (bFGF), and angiopoietin-1 (Ang-1), which directly promote cell survival and have beneficial effects on myocardial repair following MI.10, 11 In some cases, MSC sorting based on markers appears to enrich subpopulations of MSCs with differing paracrine activity.12 Here, FGF2 is linked to myocardial infarction.