Figure 2From: Epigenetic regulation of asthma and allergic diseaseReplication of methylated DNA. The palindromic nature of CpG sites is key to their inheritance (A). With replication, each separated strand carries one methylated cytosine (B). The daughter hemi-methylated DNA (C) is recognised by DNMT isoform 1 which methylates CpG sites on the new strand using the old one as a template (D).Back to article page