Figure 3From: OX40 ligand expression abrogates the immunosuppressive function of retinal pigment epithelium RT-PCR demonstrated expression of OX40L in the RNA of ARPE cells stimulated by pro-inflammatory cytokines. Lanes 1 and 2 are two different DNA ladders; lanes 3 and 4 represent two different concentrations of the same RNA from stimulated RPE cells.Back to article page