Fig. 2From: Carbon load in airway macrophages as a biomarker of exposure to particulate air pollution; a longitudinal study of an international PanelAM BC profiles with posterior predictive check for groups. Observed loess-smoothed AM BC profiles (red lines) versus model predicted loess-smoothed AM BC profiles (blue lines). Each dot represents the median value of AM BC obtained from one participant at each one of 8 time points (15 participants in each group). LMIC: low and middle-income countries; BE: Belgium; HIC: high-income countries (except BE)Back to article page