Figure 3From: The function and mechanism of COX-2 in angiogenesis of gastric cancer cellsEffects of COX-2 on tumor angiogenesis. The tumor microvessel densities (means) in sections from tumors formed by the vector transfectants SGC7901-V (V) and the siRNA transfectants SGC7901-siRNA (S). Tumor samples were immunostained with antibodies against CD31. Mean ± SD, n = 3. *, P < 0.05 VS. control.Back to article page