Fig. 6

Color Duplex Doppler Ultrasound of the penis (CDDU) before and after BM-MSC injections (n = 8). Peak systolic velocity (PSV), end-diastolic velocity (EDV), and the resistive index (RI), basal: before IC injection of 20 μg of alprostadil injection, 20 min : 20 min after IC injection of 20 μg of alprostadil injection. Values are presented as mean ± standard deviation. The statistical analysis is performed via Wilcoxon signed rank test