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.
The relationship of internal and external pages, and an example of using the CEG database. A, home page; B, search page; C, D, and E, browse pages. A to E are the internal pages of the CEG database, and these are surrounded by a blue dashed line. F to I are external pages, and are surrounded by a green dashed line. F, DEG database; G, HPRD database; H, NCBI database; I, KO database.
