BALB/c mice were immunized i.m. with 30 μg protein/animal 3 times over 28 days and were challenged on day 35 with 5.0 × 106 CFUs of PAO1 intratracheally (pneumonia model) or 3.5 × 107 CFUs of PAO1 intravenously (sepsis model). The gene discussed is SMOX; the disease is susceptibility to pneumonia measurement.