Figure 2From: OmpU as a biomarker for rapid discrimination between toxigenic and epidemic Vibrio cholerae O1/O139 and non-epidemic Vibrio cholerae in a modified MALDI-TOF MS assay MALDI-TOF MS analysis of whole cell lysates of V. cholerae isolates. A and B, examples of normalized MS spectra of a toxigenic and epidemic serogroup O1 isolate (A) and a non-toxigenic isolate (B). C and D, close-ups of selected MS-peak of Figure A and B, respectively. a, m/z = 34,750 Da, b m/z = 34,690 Da.Back to article page