Additional File 6: Fig. S6. Infection of IRF3 KO porcine PSCdMs with PRRSV. Flow cytometry analysis for PRRSV nucleocapsid protein in three IRF3 knock-out (KO) porcine PSCdMs clones relative to the wild-type parental line. Plots represent uninfected (left), untreated/infected (middle) and poly(I:C)-treated/infected (right). For poly(I:C) treatment cells were pre-treated with 25 μg/ml for 3 h prior to infection.