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.
Each pathway in the networks has an associated signaling threshold (
) and mean delay time (
). The random time between the initiation of transcription of gene 
to the full formation of a total of 
proteins 
is denoted 
, which is an implicit function of 
.
