Pulmonary IL-12 p70 and IL-13. BAL fluid and lung homogenate levels of IL-12 p70 and IL-13 were measured 24- and 48-hours after the last pulmonary challenge by ELISA; C5-sufficient (solid bars) and C5-deficient (diagonal bars) mice. A. Lung homogenate IL-12 p70, * indicates p < 0.05 for C5-sufficient compared to C5-deficient at 24-hours. B. BAL fluid IL-12 p70, p > 0.05 for C5-sufficient compared to C5-deficient at each time point. C. Lung homogenate IL-13, p > 0.05 for C5-sufficient compared to C5-deficient at each time point. BAL fluid IL-13 was below detection for the assay (124 pg/ml). Each value is the mean ± SEM for three experiments; n = 5 mice/group at 24-hours and n = 10 mice/group at 48-hours.