Knock down of p65 subunit shown by real-time PCR. Relative quantification of p65 normalised by the expression of GAPDH in HepG2 and Huh7 cells 24 hours after transfection. Values are shown as means and standard errors of the mean (SEM). a- siRNAp65x COsiRNA p<0.01-HepG2. b- siRNAp65x COsiRNA p<0.01-Huh7.