Fig. 1From: Quality control for Illumina 450K methylation data in the absence of iDat files using correlation structure in pedigrees and repeated measuresBefore (a, b) and after (c, d) BMIQ normalization. a Distribution of methylation values genome wide for 1 randomly chosen individual before probe-type normalization with BMIQ; b PCA plots before probe-type normalization with BMIQ; c Distribution of methylation values genome wide for the individual in (a) after probe-type normalization with BMIQ; and d PCA plots after probe-type normalization with BMIQBack to article page