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(A) PCA (R2X = 0. 545, Q2 = 0.06) and (B) PLS-DA score plots (R2X = 0.192, R2Y = 0.795, Q2 = 0.474) based on the 1H NMR spectra of the urine obtained from urinary metabolites from the control (black squares), glutamine (green triangles), and N-carbamylglutamate (red circles) groups.
