Cytokines gene expressions. Analysis of gene expressions. Fold increase in gene expression of INF-α, INF-β, INF-γ and TNF-α analyzed in CP-infected monocytes (A, C, E) and CT-infected monocytes (B, D, F) compared to controls (uninfected monocytes) at 1.5 (A, B), 3 (C, D), 6 (E, F) hours post-infection. *Significantly different from control group P < 0.05. §Significantly different from control group P < 0.01.