Stimulation of IMA 2.1 cells had no effect on relative survival after viral infection. IMA 2.1 cells were stimulated with LPS (10 µg/ml), IFN-γ, (10 ng/ml) LPS + IFN-γ, IL-4 (10 ng/ml), FGF (5 ng/ml) or FGF + LPS for 24 h in medium with 2% FBS. Polarization of cells was analyzed by Griess assay (a), Western blot (b) and FACS analysis by detection of MHCII+ cells (c). d MTT assay was performed to detect the relative percentage of VACV-mediated cell death in the presence of stimulating factors. e Viral replication was analyzed by standard plaque assay in the presence of stimulating factors. All experiments were performed in triplicate.