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.
Left to right: (A) the specified food domain; (B) results of the visual search. As shown in A, the food domain is specified by touching the screen, where the area outside the specified domain is darkened. In this example, the target is in the second rank of the list shown in B.
