In response to Influenza/A, the levels of PR8-specific IgG2b antibody produced by TSLPR−/− and TSLPR−/− IL-7Rα449F/449F mice in the serum and BAL were identical to WT at day 14 after infection, suggesting that antibody responses to Influenza/A are not affected by the absence of either TLSPR or IL-7Rα Tyr449 dependent signaling (Figure 8C). The gene discussed is IL7R; the disease is infection.