E, DNA methylation profiles (measured by bisulfide sequencing) of normal (n=2 mice), tumor (n=3 mice), and residual (n=3 mice) cell structures, showing a striking similarity between residual and tumor cells. Plotted are all quantified CpG sides with more than 5 reads per condition, randomly down-sampled to 10.000.000 sides. Colors in the density plots represent quartiles. 