IL4 and infection: At 4 weeks p.i., the differences in the proportion of CD4+ cells producing IL-13 in LPMCs due to a main effect of location disappeared, but there was still a significant effect of infection and an interaction between location and infection (S7A Fig, S3 Table: At 4 weeks p.i., significant interaction effects for LPMC cytokines include IL-13, IL-4, IL-17, and TNFα).