Figure 1.
(A) Chemical structure of PA. (B) Chemical structure of Poloxamers P 188 (a=75-85, b=25-30) and P 407 (a=95-105, b=54-60).
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.