Study on the Diagnosis of Gastric Cancer by Magnetic Beads Extraction and Mass Spectrometry

Figure 1

Differential analysis of serum peptides expression profile between healthy and gastric cancer patients. (a) The serum peptide expression profiles of 20 healthy patients and 20 gastric cancer patients were summarized (The horizontal coordinate is mass/charge (m/z), reflecting molecular weight. The ordinate is the sample number: red is the serum sample group of gastric cancer, green is the serum sample group of healthy people). (b) PCA plots of gastric cancer group and healthy group (Red: gastric cancer group; Green: health group). (c) Statistics of 4 differential peptide peaks (left: peptide peaks of all 40 samples; in average peak diagram of the two groups; right: Box diagram. Gastric cancer is red, healthy is green).

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