CXCL9 and influenza: The robust induction of CXCL9, 10, and 11 in both AM (Figures 1 and 2) and human alveolar type II cells [34] as well as the distinct CXCL10 response induced by both live and UV-inactivated influenza virus PR/8 and contemporary virus NY/238 (Figure 3 and 4) suggest that this family of proteins likely plays an important role in the human lung alveolar defense against influenza infection, which will require further study.