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(A) PCA, (B) PLS-DA and (C) OPLS-DA scores plots in UV scaling, and (D–F) the corresponding scores plots in Pareto scaling of Mass Spectrometry (MS) data, in negative ion mode. Permutation tests of PLS-DA models (G) in UV και (H) in Pareto scaling. (I) S-plot from OPLS-DA model.
