Although canonical mucin genes associated with influenza pathogenesis like MUC1 and MUC5B [76,77] were not regulated in A549 cells, and we did note goblet cell metaplasia to occur as a result of eosinophil transfer or differences in the eosinophil-deficient mice (data not shown), it is worth investigating the effect eosinophils have on mucin composition and goblet cell metaplasia in detail in the context of influenza. This evidence concerns the gene MUC1 and influenza.