Fig. 2From: Exposure to NO2, CO, and PM2.5 is linked to regional DNA methylation differences in asthmaFoxp3 (a) and IL-10 (b) percent methylation at measured CpG sites as a function of age, grouped by sex (M/F), and asthma status (non/asthma) as indicated. Markers of Foxp3 outliers are enclosed by black circles or squares, depending on sex. These outliers are not used in the computation of the regression lines shown for each groupBack to article page