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.
Periodical. Saxonov, Serge, Paul Berg, and Douglas Brutlag. "A Genome-Wide Analysis of CpG Dinucleotides in the Human Genome Distinguishes Two Distinct Classes of Promoters." Proceedings of the National Academy of Sciences of the United States of America 103, 5 (31 January 2006): 1412-1417. Article. 6 Images.. Proceedings of the National Academy of Sciences of the United States of America