Table 1. The viabilities of HeLa and C-4I cells transfected with different types and concentrations of siRNAs.
siRNA, small inhibitory RNA; GFP, green fluorescent protein; Sp-18E6/21, 21-nucleotide siRNA to inhibit the expression of E6 protein only; Sp-18E6/27, 27-nucleotide siRNA to inhibit the expression of E6 protein only; Ex-18E6/21, 21-nucleotide siRNA to inhibit the expression of both E6 and E7 proteins; Ex-18E6/27, 27-nucleotide siRNA to inhibit the expression of both E6 and E7 proteins.