Figure 2: Flow cytometric analysis of circulating EPCs. (a) Impact of LESWT on percentage of circulating EPC. (b) Percentage of circulating EPC of rats without LESWT. (c) Percentage of circulating EPC of rats with LESWT. Flow cytometric analysis of peripheral blood revealed significantly increased number of circulating CD31/CD34-positive endothelial progenitor cells at the end of a 3-week course of LESWT (***P < 0.001). EPC: endothelial progenitor cell; LESWT: low-energy shock-wave therapy.