Figure 2From: Cigarette smoke inhibits BAFF expression and mucosal immunoglobulin A responses in the lung during influenza virus infection Influenza virus induces BAFF expression and mucosal IgA responses in the lung. Mice were infected with influenza virus and sacrificed on day 1, day 7 and day 14 after infection. (A) The relative mRNA levels of keratinocyte-derived chemokine (KC) in the lung, (B) the total leukocyte counts, (C) BAFF protein levels and (D) influenza-specific secretory IgA (S-IgA) levels in bronchoalveolar lavage (BAL) fluid are shown (n = 3–5 mice/group). CTRL, controls; #, not detected; *P < 0.05; **P < 0.01.Back to article page