Comparison of DNA methylation levels in different avian tissues.

<p>We observed a large range of amplicon dependent DNA methylation levels. Here, the average DNAm levels for each age analysed in feather (blue) and whole blood (red) were plotted side by side to assess how conserved these signals are. Relatively low, stable (between tissue types) methylation levels are shown in <b>A)</b> for CpG 122 in <i>ASPA</i> from <i>gene set 1</i>, variable and less stable methylation levels are shown in <b>B)</b> for CpG 61 in the second <i>ELOVL2</i> amplicon from <i>gene set 2</i> and finally relatively high, stable methylation levels are shown in <b>C)</b> for CpG 57 in the third <i>TET2</i> amplicon in <i>gene set 2</i>.