. 2015 Dec 4;20(12):21732–21749. doi: 10.3390/molecules201219800
© 2015 by the authors.
Licensee MDPI, Basel, Switzerland. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Figure 3.
The basic structure of flavonoids.