Orthology established by Suzuki et al., 2011 (10 genes)

Orthology for irf4a ( Chr: 2 )
Orthology for irf4b ( Chr: 20 )
Orthology for irf6 ( Chr: 22 )
Orthology for irf8 ( Chr: 18 )
Orthology for irf9 ( Chr: 12 )