Fig. 1From: A new approach to epigenome-wide discovery of non-invasive methylation biomarkers for colorectal cancer screening in circulating cell-free DNA using pooled samplesDensity distributions of methylation data. a Density distribution of the raw methylation beta and M values across the 866,836 CpG sites measured in the six pooled serum cfDNA pooled samples. b Density distribution of the beta values by probe type for all the interrogated CpG sites in pools A–FBack to article page