In the F15-NOD Nfκb1 wild-type mice, the infiltration of CD3-positive T-cells was not detected in myocardial tissue after inoculation with influenza or HBV vaccines (Figure 2A), but it was slight in F15-NOD Nfκb1 heterozygote mice (Figure 2A). Here, NFKB1 is linked to influenza.