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.
Significance of TGTG in site I. A chip containing 348 RU of AAAATGTGAA (A) or 296 RU of GACTAAAAGA (B) was tested as described for Fig. 3. These sequences are derived from site I by replacement of selected bases by A’s; an additional A is also present at the 3′ ends of these oligonucleotides.
