Fig. 3From: Placental mitochondrial DNA and CYP1A1 gene methylation as molecular signatures for tobacco smoke exposure in pregnant women and the relevance for birth weightCorrelation between CYP1A1 methylation levels (%) and mtDNA content (log10) or mtDNA methylation (MT-RNR1) (%) in placental tissue. The dashed lines in the correlation plots depict the 95% CIBack to article page