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Figure 1. Box plot of all statistically significant (P < 0.05) metabolites. x-axis: log10 transformed mass spectrometry intensities (to reduce
the impact of variability of high-intensity peaks, intensity axis has been transformed into a logarithmic one); y-axis: m/z values. Red boxes
represent cancer, white boxes - control
performed using a Bruker Autoflex Speed ToF-MS in reflectron mode. Instrument was equipped with a
SmartBeam II laser (352 nm). The laser impulse energy was approximately 60-120 µJ; the laser repetition rate
