IGHG3 and infection: When analyzing the levels of antibodies, we observed that the total IgG concentrations during infection increased with 14dpi and 63dpi in both strains, with an increase in IgG1 and IgG3 in both strains, and an increase in IgG2a and IgG2b in ST2-/- mice with 63dpi compared to uninfected mice (Fig 2).