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.
Grapevine metabolite count and annotation. Four-way Venn diagram summarizing the number of shared metabolites in each fraction in positive (A) and negative (B) ionization modes; compound annotation by major classes, in both ionization modes (C).
