Fig. 4From: In vitro immune responses of porcine alveolar macrophages reflect host immune responses against porcine reproductive and respiratory syndrome virusesmRNA transcription of cytokines in PBMCs collected from pigs infected with the VR2332c and JA142c PRRSV strains at 0, 7, 14, 21 and 28 dpc. Analysis of mRNA transcription in PBMCs (n = 5) collected from infected and control pigs using real-time PCR. Asterisks indicate significant differences in cytokine expression induced by each virus compared with mock treatment or significant differences between JA142c and VR2332c (* indicates p ≤ 0.05)Back to article page