Fig. 3From: Characterization of resistance mechanisms of Enterobacter cloacae Complex co-resistant to carbapenem and colistinResults of MALDI-TOF mass spectrometry of lipid A. There are 4 different types of MS profile as shown by (A, B, C, D). The black labeled ion peak is the original peak or modified peak not related to colistin resistance, and the red labeled ion peak is the modified peak related to colistin resistanceBack to article page