Fig. 2From: Impact of prenatal tobacco smoking on infant telomere length trajectory and ADHD symptoms at 18 months: a longitudinal cohort studyThe impact of maternal prenatal smoking on the trajectory of infant telomere length. A scatter plot of infant TL across the first 18 months of age is presented. Infants whose mothers reported smoking during pregnancy are represented by black circles and infants of nonsmokers are represented by grey-outlined white circles. Linear trend lines are fitted to each group to visualize the change in TL over timeBack to article page