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PCA scores plots (left panel) and O-PLS-DA cross-validated scores plots (right panel) of 24-h urine at day 14 (U24 D14). (A,B): control (blue) vs. MSG (red); (C,D): control (blue) vs. NaCl (green); (E,F): control (blue) vs. NaHCO3 (brown) (n = 10 per group).
