Figure 1From: Interaction of prenatal maternal smoking, interleukin 13 genetic variants and DNA methylation influencing airflow and airway reactivityTwo-stage model to investigate environment, SNP and DNA methylation interactions influencing asthma-related lung functions (Modified from Karmaus et al. [16]. CpG, cytosine phosphate guanine; methQTL, methylation, quantitative trait loci (genetic variants that change the susceptibility for DNA methylation); modGV, modifiable genetic variants (genetic variants that are modified by DNA methylation).Back to article page