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.
Push-push negative feedback. (A) Circuit and templates. On injection of δ, production of β is activated. Then, β hybridizes to βtoiα (resulting in an increase of TAMRA fluorescence) and to βtoiδβ, which, in turn, produces the inhibitor of δtoβ, stopping the production of β. (B) Experimental time plot of the TAMRA fluorescence in normalized units (N.U.; 1 at the highest and 0 at the lowest) for different concentrations (0, 1, 2, and 4 nM) of inhibition module βtoiδβ.
