Fig. 1From: DNA methylation changes at infertility genes in newborn twins conceived by in vitro fertilisationGlobal methylation patterns. a Biological factors associated with principal components of variation of methylation profiles. Variables marked with an asterisk were only available in a subset of the sample (n = 54). b Within-pair methylation correlation in WBCs and CBMCs. BMI body mass index, DC dichorionic, DZ dizygotic, MC monochorionic, MZ monozygotic, PC principal componentBack to article page