 Image Number D1222-1 |
Plant pathologist Kai-Shu Ling inspects tomato varieties for resistance to pepino mosaic virus.
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.