Figure 1. Chemical structures.
(A) cloverleaf structure of tRNA, (B) berberine, (C) berberrubine and (D) analogs B2, B3, B4.
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.