Figure 1From: Ambient PM exposure and DNA methylation in tumor suppressor genes: a cross-sectional study DNA methylation levels measured in baseline and post-exposure samples. The spaghetti plots show the changes of individuals' DNA methylation levels in APC (A), P16 (B), P53 (C), RASSF1A (D) (black lines) and the mean change (bolded red lines) between baseline and post-exposure samples.Back to article page