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OPLS-DA analysis diagram of kidney metabolites. OPLS-DA score plots for Model vs. Normal group: (A) (positive-ion modes), (B) (negative-ion mode). OPLS-DA score plots for AS vs. Model group: (C (positive-ion modes), (D) (negative-ion mode). S-plot plots for Model vs. Normal group: (E) (positive-ion modes), (F) (negative-ion mode). S-plot plots for AS vs. Model group: (G) (positive-ion modes), (H) (negative-ion mode).
