An amplicon including 18 CpG sites (nine units) in CEBPB (−588 bp to −45 bp, relative to transcription start site) was analysed in 10 normal endometrium and 10 paired eutopic and ectopic endometrium from women with adenomyosis using the MassARRAY system (Sequenom) (Figure 6A). The gene discussed is CEBPB; the disease is adenomyosis.