However, our findings suggest that while CD11c+ cells are important in NO2-promoted allergic sensitization, depleting these cells during sensitization does not abolish all parameters of the allergic asthma phenotype, as we were unable to measure a difference in the levels of ovalbumin-specific immunoglobulins from the serum of Tg+ and Tg- animals. This evidence concerns the gene TG and allergic asthma.