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. 2016 Aug 4;17:39. doi: 10.1186/s40360-016-0083-8

Fig. 4.

Fig. 4

The inhibitory activity of quercetin against β-lactamase in hydrolyzing benzylpenicillin. β-lactamase used from E. cloacae; Con = control (no testing agent); Que (50) = Quercetin 50 μg/mL. The graph shows the remaining benzylpenicillin at the same time. Means sharing the same superscript are not significantly different from each other (Scheffe’s test, p < 0.01)