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. Author manuscript; available in PMC: 2012 Jan 4.
Published in final edited form as: Am J Biomed Sci. 2012;4(1):85–101. doi: 10.5099/aj120100085

Figure 1.

Figure 1

The dimensional image from PCA shows the distinction between 34 gastric cancer patients and 18 healthy controls. A: the classification of disease and healthy controls in the first three principal component model (PC1, PC2, PC3 ). B: the contribution of nine principal components to the profiling classification in plot of percentage explained variance of PC. The contributions of PC1, PC2, and PC3 were approximately 52%, 15%, and 12%, respectively. Red dot: healthy controls; green dot, disease group.