Figure 3

PCA scores plots for filtered data sets using different criteria. The filtering is based on fraction of present spots in both tissue types; spots present in at least 0, 25, 50 and 75% of both prostate and colon samples are included. Black circles are colon normal samples, black triangles colon tumour and black squares colon metastasis samples. Grey circles are prostate normal samples and grey triangles are prostate tumour samples.