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.
Schematic representation of the main ontology classes and class provenance between BFO, ExO, and CSEO. Arrow legend: blue: is-a relations; yellow: ExO: is_associated_with; orange: ExO: interacts_with_an_exposure_stressor_via; brown: MGED: has_experiment_ design; violet: ExO: interacts_with.
