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.
Copy propagation changes GFP to be repressed by 
rather than activated by 
, then dead code elimination removes first 
and then the regulatory region where 
was formerly produced.
