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.
(a) Typical HPLC chromatogram showing the presence of caffeic acid (1), methyl-caffeate (2), esculetin (3), and scopoletin (4) in in vitro culture of S. xanthocarpum. (b) Correlation analysis (Pearson correlation coefficient, PCC) of the relation between caffeic acid, methyl-caffeate, scopoletin, and esculetin in in vitro culture of S. xanthocarpum subjected to different light treatments. Significance level: * p < 0.05, ** p < 0.01, *** p < 0.001.
