Fig. 6From: Simultaneous determination of colistin sulfate and tigecycline in human plasma by liquid chromatography-tandem mass spectrometry methodMRM chromatograms for blank plasma with colistin sulfate (2 µg/mL), tigecycline (0.2 µg/mL), and internal standard (40 µg/mL) (A polymyxin E1; B polymyxin E2; C tigecycline; D polymyxin B1)Back to article page