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MALDI-TOF MSI data of the prognostic metabolite ion at m/z 180.90. (a) Shows a comparison of the average spectra of two soft tissue sarcoma samples, one with good prognosis (blue line) and one with poor prognosis (red line); (b) shows the magnification of m/z 180.90. Histologic images and MSI visualizations for these two samples are shown in (c), confirming the higher detected intensity throughout the poor survival patient sample
