Figure 6.
The osmotic pressure between the saturated drug in the gel and the environmental medium, and the drug is released into the medium by free diffusion.
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.