Fig. 1From: Luteolin, quercetin, genistein and quercetagetin inhibit the effects of lipopolysaccharide obtained from Porphyromonas gingivalis in H9c2 cardiomyoblastsThe chemical structures of quercetin, quercetagetin, genistein and luteolin. The central structure is that of a flavone. It has two phenyl rings (A and B) joined by a pyran ring (C). The boxes frame the substituents of their structure with respect to the flavonoid quercetinBack to article page