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  Indian J Med Microbiol
 

Figure 2: Selective ion chromatography of mixed samples of Callicarpae nudiflorae Folium. The mass spectrum information of reference substance is on the right of the graph. From top to bottom are protocatechic acid, caffeic acid, apigenin, luteolin, quercetin, ursolic acid and oleanolic acid

Figure 2: Selective ion chromatography of mixed samples of <i>Callicarpae nudiflorae</i> Folium. The mass spectrum information of reference substance is on the right of the graph. From top to bottom are protocatechic acid, caffeic acid, apigenin, luteolin, quercetin, ursolic acid and oleanolic acid