CCL11, CCL24 and CCL26 mRNA expression was determined by real-time RT-PCR analysis of microdissected conducting airways isolated from the right caudal lobe of each animal at 3 months of age. Each column represents the change in gene expression for CCL11 (A), CCL24 (B), and CCL26 (C) relative to filtered air control infant monkeys. Columns represent the mean ± SE for 6 animals, each group treated with filtered air (FA), house dust mite (HDM), ozone, or ozone + HDM as described in Materials and Methods.