IFNG and infection: Also, while Ifng levels were not significantly elevated in infected B6 and Mir155-/- mouse joints, compared to uninfected controls, the IFNγ responsive chemokine Cxcl10 showed significant upregulation in these two mouse strains upon infection, although the degree of upregulation trended lower in Mir155-/- joints compared to B6 joints (p = 0.001 by Student t-test, not significant by ANOVA).