Identification of serum proteins discriminating colorectal cancer patients and healthy controls using surface-enhanced laser desorption ionisation-time of flight mass spectrometry

Figure 1 Example of a BPS-generated classification tree distinguishing colorectal cancer patients and healthy controls. If the peak intensity of an analyzed sample is below the cut-off value at the m/z in the node, the sample proceeds to the left. If not, it proceeds to the right, where its peak intensity at the next m/z is evaluated.