Complementation with pBAH001 or pBAH002 partially rescued production of IL-8 (Fig. 4A), IL-13 (Fig. 4B), IFN-γ (Fig. 4C), IL-1β (Fig. 4D), and IL-6 (Fig. 4E), with greater cytokine production occurring with ΔflgB (pBAH001) infection compared to ΔflgB (pBAH002). The gene discussed is CXCL8; the disease is infection.