In order to test whether delaying Ang‐2 antagonism until alveolar‐capillary barrier function is more impaired, we again infected mice with 800 FFU of influenza and then administered a single dose of Fc or L1‐7 at 5 dpi (Figure 7a), a time at which BAL protein is significantly elevated (Figure 1f). Here, ANGPT2 is linked to influenza.