Figure 6.
The cluster analysis tree of 55 batches of commercial SR (the indicator is the ratio of the total content of three chromone aglycones to the total content of six chromone compounds).
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.