CD4+CD25+ T-cells in draining lymph nodes (DLNs) from mice treated with Ad-ΔB7/IL12/GMCSF and/or dendritic cells (DCs). DLNs were collected from mice treated with phosphate-buffered saline (PBS), DC, Ad-ΔB7/IL12/GMCSF, Ad-ΔB7/IL12/GMCSF plus DCs, or Ad-ΔB7/IL12/GMCSF (H; high-dose of Ad) plus DCs. Proportion of CD4+CD25+ T-cells in the DLNs from different groups of mice were measured by fluorescence-activated cell sorting analysis. Data points represent the mean ± SE of three mice per group, and similar results were obtained from at least two separate experiments. *P < 0.05; **P < 0.01. GM-CSF, granulocyte-macrophage colony-stimulating factor; IL, interleukin.