Unknown Assignemnt Unknown Samples Actual Festa Deposition Via Cluster analysis A Src – SH2 Src – SH2 B cdk2 cdk2 C p53 p53 D PTPNII-SH2   PTPN11-SH2 E Src – SH2 PTPN11-SH2 F p53 PTPN11-SH2

Table 8: Comparison between the actual protein deposition in the NAPPA array and the assignment made by cluster analysis as explained in the text and in Table 7.