In addition, except for 4 of the regulatory genes (IRF4, JAK1, NFATC4 and STAT6), many of the other genes in this pathway were only transiently expressed at 2 (IL4R and PTPRC) or 4 and/or 8 (IL13, IL4 and CEBPB) weeks post-infection. Here, IL4 is linked to infection.