The tube formation inhibition of different treatments was detected in HUVECs angiogenesis model. (A) Representative photographs of each treatments were shown. (B) The total numbers of branching points were decreased by treatment of siRNA cocktail, VEGF-siRNA#1 and KSP-siRNA#2 compared to the untreated. Values were given as mean value ± standard deviation (SD) of triplicate. *p < 0.05 compared to untreated cell group.