Fig. 5
From: Low-mass-ion discriminant equation (LOME) for ovarian cancer screening
Selection of candidate metabolites for the LMI with 147.0764 m/z. a Mass spectra of 147.0764 m/z. MS and MS/MS pattern analyses were performed using a Triple-TOF mass spectrometer. The LMI with 147.1699 m/z in the MALDI mass spectrum was shifted to 147.0764 m/z in the Triple-TOF mass spectrum. The intensity of the LMI with 147.0764 m/z was significantly higher in the control group (peaks in blue) compared to the OVC group (peaks in red). b MS/MS analysis of the LMI with 147.0764 m/z. c Structure of HMDB00641 (L-glutamine), HMDB02031 (ureidoisobutyric acid) and HMDB03423 (D-glutamine). d HMDB number of the LMI with 147.0764 m/z. Based on the MS/MS analytic pattern, three metabolic compounds—HMDB00641 (L-glutamine), HMDB02031 (ureidoisobutyric acid) and HMDB03423 (D-glutamine)—for the LMI with 147.0764 m/z were selected