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.
Classification based on (A) organismal system categories, (B) metabolism categories, (C) genetic information processing categories, (D) environmental information processing categories, and (E) cellular process categories.
