Fig. 7From: In vitro immune responses of porcine alveolar macrophages reflect host immune responses against porcine reproductive and respiratory syndrome virusesFrequency of immune cells in PBMCs derived from PRRSV-infected pigs. a Activated CD4+ T cells (CD4+CD25+Foxp3−), b type I helper T cells (CD4+IFN-γ+), c cytotoxic T cells (CD8+IFN-γ+), d total PBMCs expressing IFN-γ+ and e TRegs (CD4+CD25+Foxp3+). Each bar represents the average percentage of immune cells from 5 pigs ± SEM. Bars showing different letters represent values that differ significantly from each other (p < 0.05)Back to article page