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.
Photograph of a newly constructed guinea pig corral with an impregnated net and an original corral. Groups of sentinel guinea pigs were either placed in newly constructed guinea pig corrals which were covered with deltamethrin-impregnated nets, or pre-existing guinea pig pens (pictured behind the newly constructed pen).
