Down-regulated genes in CCCLs vs. HaCaT cells. A. Group of selected genes from microarray expression assays. The fold change value shown is a mean of the three CCCLs, HeLa, SiHa, and C-33A; B. Individual relative expression (ΔΔCp) of each selected gene as determined by qPCR in HeLa, SiHa, and C-33A. The values obtained were normalized to three reference genes, ACTB, GAPDH, and RPL32, and determined relative to HaCaT cells (set as 1). Means ± SD from at least three independent experiments are shown.