The effect of TLR agonists and synthetic dsRNA, dsDNA on lysozyme mRNA expression in human ARPE19 cells. ARPE19 cells were treated with different concentrations of LPS (A), Pam3CSK (B), PGN-SA (C), naked Poly(I:C), Poly(I:C) transfected with lipofectamine 2000 (E), and Poly(dA:dT) transfected with Lipo2000 (F) for 24 hours. The expression of lysozyme mRNA was examined by real-time qPCR. Mean ± SD, *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001. One-way ANOVA with Dunnett's multiple comparison's tests.