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. 2020 Nov 6;15(11):e0241304. doi: 10.1371/journal.pone.0241304

Fig 2. Checkerboard showing effect of antibiotic-quercetin combinations against P. aeruginosa strains.

Fig 2

Pink color represents growth inhibition (additive/MIC), cream color indicates the synergistic effect with growth inhibition. Green shows no reduction in the growth (no effect) based on the visible turbidity. The P. aeruginosa strains were treated with fractional concentration of antibiotic with quercetin in 96-well MHB for 24 h. The growth based on visible turbidity was used for interpreting the results.