Cluster Assignment p53 (p) 2 2 1 1 PTPN11-SH2(pt) - 2 2 2 Src-SH2 (s) - 3 1 1 CDK2 (c) 3 - 2 1

Table 5: Cluster assignment for each known protein sample on a specimen of 23 samples in the ROI 1000/2000 with a binning window of 1000 m/Z. Statistics are based on the SpADS results coupled with K Means clustering given in Figure 8.