Figure 3.
The visual aspect of chitosan-based xerogels, dried (a) and immersed in pH 3.6 HCl solution (b) or in 10% aqueous acetic acid (c).
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.