Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
DNA (black string), CpG sites (potential methylation sites - red), methyl groups (purple), nucleosomes (blue), polymerases (brown) and DNMT1(green).
