Notice: Undefined index: HTTP_REFERER in D:\CNES\index.php on line 3
Medical Definition of CpG

Definition of CpG

CpG: In genetics, a site where cytosine (C) lies next to guanine (G) in the DNA sequence. (The p indicates that C and G are connected by a phosphodiester bond.) Methylation of DNA occurs at any CpG site.