Figure 2
From: Malignancy-associated metabolic profiling of human glioma cell lines using 1H NMR spectroscopy
Metabolic profiles of five glioma cell lines. (A) PCA scores plot for spectral data of aqueous metabolites from five glioma cell lines. Each data point in ellipse represents a sample with replicates for each cell line. (B) FCM clustering for spectral data from five glioma cell lines. The cluster number was set at two and the membership values for each cell line were determined. (C) PLS-DA scores plot of the classification model. (D) The validation plot of the PLS-DA model, generated from the permutation test that was randomly permuted 999 times with the first three components. The green square is R2Y (cum), which is the explained variance of the model. The blue square is Q2 (cum), standing for the predictive ability of the model.