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.
 Image Number K8492-20 |
Agricultural producers and researchers both face a wide array of daunting challenges. For example, controlling this tiny biting midge, Culicoides sonorensis, which can infect livestock with the virus that causes bluetongue, could save U.S. cattle and sheep industries about $125 million each year. Scanning electron micrograph (magnification about 150x) by Richard Nunamaker.
