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(A) Visualization of the uptake of siRNA using fluorescence microscopy. (B) mRNA expression of VEGF, determined using quantitative polymerase chain reaction analysis. (C) Associated VEGF protein level, determined by enzyme-linked immunosorbent assays. *P<0.05, compared with the other three control groups. Data are expressed as the mean ± standard deviation. siRNA, small interfering RNA; siNC, siRNA negative control; VEGF, vascular endothelial growth factor; TCP, tissue culture plate.
