Six- to eight-week-old male and female IFNAR−/− (C57BL/6 mice homozygous for an IFNAR1 knock-out mutation, B6.129S2-Ifnar1tm1Agt) [36 (link)] (bred in-house), WT BALB/c and C57BL/6 mice (purchased from Janvier Labs, France) were used throughout this study. All experiments using mice strictly followed Belgian guidelines for animal experimentation and guidelines of the Federation of European Laboratory Animal Science Associations (FELASA). The Ethical Committee of the Animal Research Center of KU Leuven approved all experiments (project number P100/2019).