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.
Molecular organization of host ACE-2 monomer showing the interaction sites of different classes of phytocompounds (quinones, alkaloids, flavonoids, tannins, terpenoids, and organosulphur compounds) on the HEMGH/SARS CoV-2 spike protein binding domain and the collectrin domain (adapted from Bian and Li, 2021[118]).
