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. 2019 Nov 26;10:2711. doi: 10.3389/fmicb.2019.02711

FIGURE 2.

FIGURE 2

Direct detection of proteins conferring resistance (e.g., lactamases) from microbial cells by MALDI-TOF MS. Sample preparation can be simple or elaborate as mentioned in the text. Peaks with m/z not corresponding to the theoretical mass of the targeted protein (± tolerance allowed for analytical error) do not allow conclusions on the resistance status of the isolate.