TBX21 and infection: Similarly to the association of increased CCR4 ligand levels with Th2 cells, the eosinophilic airways response to RV in Tbet-/- mice was associated with an increase in the eosinophil chemoattractant CCL24/Eotaxin 2 in the airways compared to PBS challenged Tbet-/- and RV infected w/t mice on day 7 post-infection (Fig 4F).