Fig. 4From: Comparison of pre-processing methodologies for Illumina 450k methylation array data in familial analysesAssociation plot between SNPs and methylation. Association between methylation at cg17749961 and SNPs in a 2-Mb window. There is a significant association in the raw data (a, p value = 7.29e-06) which increases after stratified QN (b, p value = 3.53e-07) and drops slightly after ComBat correction (c, p value = 1.05e-05)Back to article page