Figure 7

Principal components analysis of kidney biopsies to distinguish cancer tumor from benign biopsies. The metabolites identified as significant (P ≤ 0.05) between cancer tumor-containing and benign kidney biopsies by matched pairs t-test were used to construct the principal components analysis. Blue, cancer tumor samples; yellow, benign samples. The six nephrectomy patients are each indicated by a shape: circle, patient 1; square, patient 2; upward triangle, patient 3; downward triangle, patient 4; left pointing triangle, patient 5; right pointing triangle, patient 6.