Additional file 15.

Figure S13. Heat map analysis of average 5hmC levels over PPRs in control ('WT') and PB-exposed ('PB') mouse livers. Average 5hmC levels are represented by a color scale ranging from strongly enriched (red, log₂ +2) to depleted (blue, log₂ -2). PPRs are clustered by both Euclidian and Ward methods. This analysis reveals that although the majority of PPRs do not reveal strong changes in their 5hmC levels upon PB exposure, certain regions do reveal moderate levels of perturbation.

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Thomson et al. Genome Biology 2012 13:R93   doi:10.1186/gb-2012-13-10-r93