Figure 3D compares the levels of ApoCI, C3a/C3a-desArg and TTR by western blotting between four BC and four HV serum samples, with quantitation of band densities shown in Figure 3E, correlations between SELDI peak intensity and densitometric analysis of western blotting are shown in Figure 3F, G and H for the three proteins, indicating strong positive relationships between MS peak intensity for peaks identified as ApoCI (m/z 6624), C3a-desArg (m/z 8916), and TTR (m/z 13870), and their quantitation by immunoblot. This evidence concerns the gene APOC1 and breast cancer.