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Metabolomic analysis of follicular fluid from patients with diminished ovarian reserved (n = 26, green dots) and healthy controls (n = 28, red dots) under HILIC and RPLC mode. OPLS-DA score plots for positive ionization mode (A, E) and negative ionization mode (C, G), the OPLS-DA model’s permutation test for positive ionization mode (B, F) and negative ionization mode (D, H). (A-D): HILIC mode; e-h: RPLC mode.
