Review
Copyright ©2009 Baishideng.
World J Gastrointest Oncol. Oct 15, 2009; 1(1): 41-46
Published online Oct 15, 2009. doi: 10.4251/wjgo.v1.i1.41
Figure 2
Figure 2 A schematic model of methylation spreading and gene silencing. A: Status of completely unmethylated CpGs with gene transcription (arrow); B: Appearance of methylated CpGs at the edge of CpG islands with gene transcription (arrow); C: Gene silencing by CpG methylation at the transcription start site.