Figure 2.
IL-17 is induced in the lung upon allergen challenge. Mice were sensitized and challenged with OVA, and IL-17 and IL-23 were determined by ELISA in the lung homogenate (A and B). In naive, nonsensitized mice, no IL-17 was detected (A). In C and D, cells from mediastinal lymph nodes (MLNs) or splenocytes of sensitized and challenged mice were restimulated in vitro with 300 ng/ml IL-23. The bars represent the mean ± SD (n = 8 animals per group). n.d., not detected. *, P ≤ 0.05; dotted line indicates basal levels.