Representative MS/MS spectra depicting the overexpression of (A) TNFAIP2 (eightfold), (B) CEBPB (threefold), (C) PLAUR (threefold) and (D) SDCBP (fourfold). TNFAIP2, tumor necrosis factor alpha-induced protein 2; CEBPB, CCAAT/enhancer binding protein; PLAUR, plasminogen activator, urokinase receptor; SDCBP, syndecan binding protein.