Figure 4From: The function and mechanism of COX-2 in angiogenesis of gastric cancer cellsEffects of conditioned media on HUVEC tube formation. HUVECs were seeded in triplicate on Matrigel-coated 24-well plates, and incubated for 16 h with control SGC7901 medium (A) and COX-2-siRNA medium (B).Back to article page