The ratios of COX-2 mRNA in NC, 1#-4#siRNA or HeLa group to CTL group were 0.72, 0.3, 0.25, 0.4, 0.04, 2.1 respectively by semi-quantitative RT-PCR.

• 转染36h；PCR结果显示；CTL、NC、1%23siRNA、2%23RNA、3%23RNA、4%23siRNA、阳性对照HeLa细胞组hCOX-2 mRNA电泳条带密度值分别为1、0.；72、0