 Image Number D704-1 |
Chemists LinShu Liu (left) and David Coffin examine a microsphere made from pectin and zein. It is used as a controlled drug-delivery system.
Photo by Peggy Greb.
An official website of the United States government
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.