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.
(A) Fluorescence emission spectra of tryptophan in EGFP showing the decrease in fluorescence intensity as a function of pH (9–5). (B) Stern–Volmer plots of steady-state fluorescence intensity showing the quenching of fluorescence by acrylamide at pH 8 (open circles) and at pH 5 (open triangles).
