Analysis of the urinary peptidome associated with Helicobacter pylori infection

Figure 2 Differentially expressed low-mass peptides in human urine. A: The average intensities of matrix-assisted laser desorption/ionization time-of-flight peaks for the healthy group (red line), and the H. pylori-infected group (green line); B, D: The enlarged picture m/z 6788 and m/z 1912, respectively, the healthy group (red line) and the H. pylori-infected group (green line); C: The complete spectra from both the healthy group (red line) and the H. pylori-infected group (green line).