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 EXACT2 upper level classes (a fragment). EXACT2 has the following upper level classes: process (i.e. experimental actions, procedures and protocols), descriptor of experimental action (i.e. equipment, biochemical entities, temperature, speed, volume, etc.) and information content entity (i.e. author, licence, etc.).
