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.
Proportion of DNA bound by the polymer, B, as a function of polymer amine group concentration for LPEI at pH 7.4 (a) and at pH 5.2 (b). (●) Measured points, calculated by (solid line) independent binding model and (dashed line) cooperative binding model.
