Fig. 2From: SERPINA1 methylation and lung function in tobacco-smoke exposed European children and adults: a meta-analysis of ALEC population-based cohortsa-b Heatmaps for correlation of methylation at 119 CpGs in SERPINA gene cluster in SAPALDIA. Heatmaps correlations at the first (a; T1) and second (b; T2) time-points. CpGs located on the SERPINA1 gene are highlighted in black and labeled. Both figures were created with the R softwareBack to article page