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. 2017 Oct 5;12(10):e0185935. doi: 10.1371/journal.pone.0185935

Fig 1. Representative MALDI-TOF mass spectra of two K. pneumoniae organisms detected as CTX-susceptible (A) and CTX-resistant (B), respectively, by the D-MSBL assay in patients’ BC samples.

Fig 1

As detailed on the bottom, classification results were determined by the analysis of both resistance-defining mass peaks (415.5 and 370.5) and susceptibility-defining peaks (456.5 and 396.5) in the test sample compared to those of a control negative (CTX-susceptible) sample (i.e., K. pneumoniae ATCC 25955 β-lactamase non-producer).