Figure 2From: Identification of tetrodotoxin-producing Shewanella spp. from feces of food poisoning patients and food samplesMass Spectrometry analysis of the TTX extracts from the Shewanella isolates. A and B show the mass spectra of the sample containing TTX and of authentic TTX with ESI full MS. The retention time (RT) of the chromatogram of the sample, with a selective ion mode (SIM) specific for m/z 320 ions, was 2.45 min, which was similar to the RT (2.43 min) of authentic TTX (C and D). E and F show the MS/MS spectra of the sample containing TTX and of authentic TTX.Back to article page