Fig. 9
a Western blots of RANKL expression within the callus tissue of controls and sildenafil-treated mice at 2 and 5 weeks after surgery. b Expression of RANKL (pixel intensity ×104) within the callus tissue of controls (white bars, n = 3) and sildenafil-treated mice (black bars, n = 3) at 2 and 5 weeks after surgery. c Western blots of OPG expression within the callus tissue of controls and sildenafil-treated mice at 2 and 5 weeks after surgery. d Expression of OPG (pixel intensity ×104) within the callus tissue of controls (white bars, n = 3) and sildenafil-treated mice (black bars, n = 3) at 2 and 5 weeks after surgery. Mean ± SEM; *p < 0.05 vs. control