Fig. 5From: Celastrol mitigates staphyloxanthin biosynthesis and biofilm formation in Staphylococcus aureus via targeting key regulators of virulence; in vitro and in vivo approach(A) The raw spectra of S. aureus ATCC 6538 cells and celastrol treated cells within wavenumber 4000–500 cm− 1. Blue and red lines represent control untreated and celastrol treated cells respectively. (B) Cup diffusion assay showing increased susceptibility of celastrol treated S. aureus to polymyxin B as compared with untreated cells. Inhibition zone diameter is represented as the mean ± standard error from triplicate experimentsBack to article page