Type I IFN alone increases inflammatory transcript in uninfected macrophages. 500 units of IFN were added to WT B6 BMDMs that were left unpolarized as M0s (n=5) or polarized to an M2 subset (n=5) (A) or Ifnar1−/− BMDMs (n=2) left unpolarized as M0s (B). Il6, Tnf , Cxcl9, and Cxcl10 transcript data is displayed as fold change over untreated control groups (0 units IFN). In all cases, significance was determined using a Mann-Whitney test, ** p < 0.01