. 2018 Jun 22;8:209. doi: 10.3389/fcimb.2018.00209
Copyright © 2018 Martínez-Castillo, Pacheco-Yepez, Flores-Huerta, Guzmán-Téllez, Jarillo-Luna, Cárdenas-Jaramillo, Campos-Rodríguez and Shibayama.
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Figure 1.
General structure of flavonoids.