A Metabonomics Profiling Study on Phlegm Syndrome and Blood-Stasis Syndrome in Coronary Heart Disease Patients Using Liquid Chromatography/Quadrupole Time-of-Flight Mass Spectrometry

Figure 2

PCA scores plots of CHD () and healthy () subjects in ESI⁺ (a) mode and ESI⁻ (b), PLS-DA scores plots of CHD () and healthy () subjects in ESI⁺ (c) mode and ESI⁻ (d). X-axis expressed the first component of the metabolite data. Y-axis expressed the second component.

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